Current issue

• 2004 Vol.20 No.1 Published:05 February 2004

  目次

  Dry Freezing Cryopreservation of Loquat Pollen Wang Jiafu,Liu Yuexue、, Liu Xiaojun,Lin Sunquan 2004, 20 (1):  1-1.  Abstract + ( 1821 )   PDF ( 180831KB )   ( 768 ) A procedure had been studied on cryopresrvation of Loquat (Eriobotrya japonica Lindl.) pollen by the method of dry freezing. The pollen taken away from the Loquat trees is directly put into the LN after being dried, then take it out from the LN and calculate its germination proportion. The results show that the major factor that determines the Loquat pollen vital force is its water content, the adequate water content for its survival is 30% or so. The thawing temperature and methods are not significant to the percentage of stored pollen germinated in vitro.

  Competitive Inhibition from CYP 1A2 in Rat Liver Microsomes by Polychlorinated Biphenyls Chen Jinjun, Kong Qingbo, Nie Fanghong, Nigel J. Bunce 2004, 20 (1):  3-3.  Abstract + ( 1365 )   PDF ( 137666KB )   ( 639 ) Polychlorinated biphenyls (PCBs) fall into the category of halogenated aromatic compounds (HACs) or dioxin-like compounds (DLCs) and are highly lipophilic environmental contaminants. Metabolism of DLCs generally involves monooxygenase enzymes of the CYP 1A family in which CYP 1A2 specifically exists in hepatocytes and is mainly responsible for much more toxic reactions of xenobiotics. In this work, we have examined the role of numerous PCBs as inhibitors of the demethylation of 7-methoxyresorufin, a process that is selectively catalyzed by CYP1A2. 2,3,7,8-Tetrachlorobenzo-p-dioxin (TCDD), 3,3’,4,4’-tetrachlorobiphenyl (PCB 77) and 3,3’,4,4’,5-pentachlorobiphenyl (PCB 126) were found to be the strongest inhibitors of methoxyresorufin-O-demethylase （MROD） activity, thus accounting for the high ability of hepatic tissue to selectively sequester these compounds.

  Principals and Development Technology for Crop Community Cultivation Wei Li, Qu Gaizhi, Li Xinmei, Du Xintian, Wang Tongchao 2004, 20 (1):  7-7.  Abstract + ( 1215 )   PDF ( 97864KB )   ( 466 ) Crop community cultivation is a new era in history of traditional cultivation in our country. The paper is briefly introduced the present and development trend of crop community cultivation by our experiments and investigations, and put forward that the key points of the technology lies on combination of crop community, field structure, controlling systematically, and promotes some answers to a certain problems of the technology.

  Studying on Genetic Parameter of the Bearing Term Structure and Agronomic Characters of the Summer Seeding Soybean Chen Xuezhen,Li Xin,Yang Jjianyu, Xie Hao,Han Tianfu 2004, 20 (1):  9-9.  Abstract + ( 1643 )   PDF ( 148357KB )   ( 592 ) The analyses on genetic parameter between the bearing term traits and agronomic character of 103 soybean varieties whose the bearing term was less than 100 days chosen from 339 soybean varieties. The results indicated:1)The amount of legumes per plant was significant positive with the number of seeds per plant and the bearing term prophase, was striking positive with R1;it was striking positive between the number of seeds per plant and R7;it was significant positive with 100-seed weight and whole bearing term.2)The agronomic characters whose h2>60% were the height of lowest legume, the height of plant, the number of caulis’nodes,R1,100-seed weight, the early stage of bearing term, the length of legume, the later stage of bearing term, whole bearing term.3)The ordinal rate of relative heredity progress were the number of caulis’divarications, the first efficient divaricating, the height of lowest legume, the height of plant, the amount of seeds per plant.4)Whose genetic variation parameter>25% were the number of caulis’ divaricating, the first efficient divaricating, the height of lowest legume, the number of seeds per plant, the height of plant and the number of legumes per plant.

  Application of Ion Beam Bio-technology in Rice Genetic Improvement Wang Songli，Ｗang Ｈongyan,Huang Qunce 2004, 20 (1):  14-14.  Abstract + ( 1397 )   PDF ( 90917KB )   ( 625 ) The development of ion beam bio-technology is briefly summarized，and its basic principle and characteristics are described.It is analyzed in rice genetic improvement about the mutagenic effect and the transgenic effect of ion beam bio-technology，and it is thought that a novel situation of production and breeding in rice will be initiated by ion beam bio-technology.

  Effects of PP333 on the Growth、Photosynthesis and Transpiration of Cassava Zhou Fengjue,Xu Hongyuan,Bai Kundong,Shi Lijun 2004, 20 (1):  17-17.  Abstract + ( 1427 )   PDF ( 284678KB )   ( 684 ) Take variety GR911 as testing material, spray 500mg/L and 1000mg/L paclobutrazol (PP333) solution on leaves of cassava during expanding period of root tubers. It was found that PP333 can shorten cassaca's plant height, decrease leaf area, but increase the weight of unite leaf, content of photosynthetic pigment, transpiration rate and stomata conductance, increase the net photosynthetic, root/crown ratio， improves the photosynthetic material accumulation and the yield.

  Insect Resistance Identification of sck Transgenic Rice in Paddy-field He Longfei, Lu Shengan, Li Chuangzhen, Yang Jiangguo, Wang Aiqin, Yi Xiaoping 2004, 20 (1):  21-21.  Abstract + ( 1453 )   PDF ( 123357KB )   ( 609 ) Using sck transgenic rice, such as M81, R527, C162, Qiu B, D62B, and its controls as the materials, we investigated and identified their resistance to stem borer in the field. The results were showed as follows. Compared with the control, the resistant abilities to stem borer of all sck transgenic rice materials planted in paddy-field during early crops and late crops increased distinctly using dead heart plant index and white head plant index as identification indices. All of them had middle or high resistant abilities to stem borer, but all controls were middle sensitive or sensitive to stem borer. The results gained from dead heart plant index and white head plant index, early crops and late crops were similar. We can use dead heart plant index or white head plant index as identification index in early crops or late crops in stem borer resistance identification in the future.

  Research Progress on Biological Nitrogen Fixation Ci En, Gao Ming 2004, 20 (1):  25-25.  Abstract + ( 2058 )   PDF ( 122820KB )   ( 1491 ) The biological nitrogen fixation is a global strategic problem, and is very significant to environment, food and population and so on. Currently, its research has been being developed on the level of gene, enzyme, cell and ecosystem. The paper reviews home and overseas research works on exhumation and use of nitrogen-fixing resource, genetics engineering of nitrogen fixation, and biochemistry of nitrogenase and chemical modeling of biological nitrogen fixation, and describe the prospect of biological nitrogen-fixing research.

  The Application of mRNA Differential Display in Isolation of Genes in Rice(Oryza sativa L.) Cheng Yanjun, ，Gao Dongying, Liu Aimin，Tao Lan 2004, 20 (1):  29-29.  Abstract + ( 1585 )   PDF ( 127709KB )   ( 766 ) mRNA differential display reverse transcription polymerase chain reaction（DDRT-PCR）is an effective technology in isolation and cloning genes in molecular biology. The primary principle, superiorities, shortages, and technological improvements were reviewed, and this paper mainly focuses on the application of the technology in the isolation of rice (Oryza sativa L.) genes.

  The Application of Ion Beam Bio-technology on Wheat Genetic Improvement Xuan Yun,Wang Huifeng, Huang Qunce ,Qin Guangyong,Huo Yuping 2004, 20 (1):  32-32.  Abstract + ( 1326 )   PDF ( 120988KB )   ( 765 ) Presented in this paper is a summary of the mechanism of mutation breeding induced by ion beam, the achievement of wheat genetic improvement by ion beam implantation, as well as an analysis of the ways to improve the efficiency of mutation breeding by ion beam implantation.

  Study on yielding influence of Pleurotus erynii for different cultural media Tang yuqing,Zhao Yitao,Yu Jiaping 2004, 20 (1):  35-35.  Abstract + ( 1281 )   PDF ( 97449KB )   ( 558 ) Author cultivates Pleurotus eryngii by using five types prescription of media(A .B .C .D .E), complete random odds test design , five treatments and five repeats. Author ensured that E prescription is the best of five types prescription of cultural media(A .B .C .D .E)by square –odds-analyse. This provide scientific basic of choice cultural media that people cultivates Pleurotus eryngii in plain in our country.

  Programmed Death in Plant Cell Cao Hui, Wang XiaoWei, Han Zhenhai, Xu Xuefeng 2004, 20 (1):  37-37.  Abstract + ( 1605 )   PDF ( 123300KB )   ( 1192 ) Programmed cell death (PCD) is an active and gene-regulated process which plays an important role in normal growth and development of plants. In this review, we summarize recent studies on the features of PCD in plants including the changes in cell morphology and the processing of DNA, the evidences for during vegetative and reproductive phase of plant development and the interactions of plant with environment, the mechanisms of regulation PCD in plants.

  Discussion on Breeding of Broad-spectrum Compatibility Restoring-line Based on Development of T461 Zhu Xudong,Zhu Qingsen,Chen Hongqi,Min Shaokai 2004, 20 (1):  40-40.  Abstract + ( 1266 )   PDF ( 98255KB )   ( 505 ) T461, developed from Lunhui 422 crossed with Italian japonica variety Cripto, is a japonica-like restoring-line to CMS rice, with broad-spectrum compatibility to indica & japonica and good general combining ability. T461 can restore different CMS type including WA, DA, IA, BT and Dian type. The spikelet fertility of test-crossers was above 90% averagely for T461, combined with indica and japonica testers, to be strong compatibility with broad-spetrum. In development of T461, the segregating progeny was test-crossed by different CMS lines for restoring and combining ability, at the same time for broad-spectrum compatibility.

  Maintenance approachs of complete male sterility in Brassica napus L. Wang Rui , Li Jiana 2004, 20 (1):  43-43.  Abstract + ( 1953 )   PDF ( 150420KB )   ( 732 ) Complete male sterility of Brassica napus L plays an important role in heterosis utilization.This paper summarizes various maintenance approachs of complete male sterility in Brassica napus L. It also points out a prospect of development foreground and study direction of this research field.

  Data Mining Analysis of Bidding Ability of Agricultural Products' Suppliers based upon Decision Tree Sun Wei，Wan Xiaoning，Sun Linyan，Ma Yanan 2004, 20 (1):  47-47.  Abstract + ( 1581 )   PDF ( 128323KB )   ( 710 ) B2B is a major solution in the agricultural products electronic commerce at present, and in which the suppliers’ ability for bidding is very important to cope with the e-commerce-based agricultural products purchase through bidding. This paper proposes using data mining based on the algorithms for decision tree to classify the factors that influence the suppliers’ ability for bidding. We examine a cooperative website’s data warehouse, showing the process of applying data mining techniques, and some of the data issues, analysis problems, and results. The result mined by the algorithms for decision tree shows: the decreasing sequence of the influencing factors to the suppliers’ ability for bidding is: quoted price, time delivery performance, level of demand.

  Effects of Magnetized NaCl Stress Solution on Seed Germination of Rice Xiao Wang, Wang Yuling ,Yi Guang, Liang Yihua 2004, 20 (1):  51-51.  Abstract + ( 1475 )   PDF ( 239965KB )   ( 735 ) Seeds and seedlings of rice were treated with magnetized NaCl stress solution at different intensity in order to study the effects of magnetized intensity on seeds germination and seedling physiologic under NaCl stress.The results compared with contrast showed that germination percentage, germination index, germination potential of rice seeds and soluble sugar content of watermelon seedlings had been improved distinctly after treated with magnetized water of 0.05T,and the activity and content of POD enzymes had been enhanced when treated with different intensity;but had little effects on EST isoenzymes. The study indicated that germination of rice seed under NaCl stress and salinity tolerance salt of rice seedlings could be increased when treated with magnetic intensity at moderate degree

  The Evolutions and Prospect of China's Scientific and Technical Current Development on Cotton Li Honghui,Li Junlan,Cui Shufang,Jin Weiping,Wan Yanxia,Wang Guangen 2004, 20 (1):  54-54.  Abstract + ( 1432 )   PDF ( 92545KB )   ( 678 ) On the field of Cotton Variety resources,Cotton Genetics and breeding,Cultural technics.The use of resources and computer-base monitoring systems etc,Analyzed the current status of China's scientific and technical development on cotton,And suggested new concepts for the future development domestically.So that we can find the distances between china and the world,Enable the development of china's cotton to sustainable agriculture.

  Progress of Studies on the Fragrance of Rice Xie Xinhua.,Xiao Xin,Li Xiaofang,Liu Lingwei 2004, 20 (1):  57-57.  Abstract + ( 1518 )   PDF ( 93559KB )   ( 1171 ) In this paper,progress of studies the fragrance of rice was summarized involving the mechanism of sniffed scent, chemical composition, appraising method, inheritance of aroma, effect of rice varieties and machining process and condition of storage, rice breeding.

  Effect of Ultradry Storage on the Seed Vigor of Maize Lu Jinhai, Wu xianjin 2004, 20 (1):  60-60.  Abstract + ( 1344 )   PDF ( 113246KB )   ( 726 ) The effect of ultradry on the seed vigor of maize were studied. The results were as follows: Ultradrying treatments did not induce any significant changes either seed vigor or the activities of SOD and POD of maize seeds, and the slight damage of cell membrane induced by ultradrying treatments could be repaired during the seeds imbibition, so it was suitable for ultradry storage .

  The difference of the rice quality at the different breeding place and the useful policy Li jinjun, Xu meiling, Lu jingen, Zhang guoxing, cheng ling 2004, 20 (1):  63-63.  Abstract + ( 1360 )   PDF ( 119317KB )   ( 557 ) It is found that the quality of the same rice variety, which is related with commercial character such as the content of amylose ,white belly and eating quality et al is quite different through analyzing 7 rice varieties including 4 Indica and 3 Japonica rice varieties produced in Jiaxing and Hainan rice breeding bacees.It is clear that the difference is caused by the different temperature condition during the seed development after heading. That is, the higher of the temperature, the lower of the content of the amylase;On the contrary the lower of the temperature, the higher of the content of the amylose in the rice during the seed development after the heading stage. Therefore, when the rice breeding program is conducted at the different place or in the different season , the content of the amylose in rice should be different. Also the quality of rice can be improved through the adjustment of the seeding or heading stage.

  Review on Reserarch of Wheat Quality Improvement in Heilongjiang Province Ma Yong 2004, 20 (1):  66-66.  Abstract + ( 1288 )   PDF ( 62996KB )   ( 610 ) It detailed the present situation of researches on wheat quality improvement in and present situation of wheat quality in Heilongjiang province, and the study method and the way of technology. In order to providing accordance for wheat quality improvement.

  Analysis on the Interactions of Combining Ability with Environment for Stem Characters in Wheat Cui Dangqun,Nie Lihong,Dong Zhongdong,Liu Yanyang 2004, 20 (1):  67-67.  Abstract + ( 1501 )   PDF ( 123077KB )   ( 572 ) To study the interactions of combining ability with environment for the stem characters in wheat, a set of diallel cross involving 7 random parents was made in three years. The resul showed that interactions of general combining ability with environment of top 1st and 2nd and basal 1st and 2nd internode length and top 1st internode stem diameter and interactions of special combining ability with environment of all internode length and basal internode stem diameter were significant. Top internode length and top 1st and 2nd and basal 1st and 2nd internode stem diameter mainly controlled by additive gene effect. Environment effect was highest and additive gene effect was second for basal internode length and middle internode stem diameter. Stability were higher for general combining ability and stability were lower for special combining ability .

  Studies about Effects of the Major Agronomic Characteristics on Yielding Stability in Maize Hybrids Tang Guomin,Long Liping,Yu Lizhi, Xia Dejun,Yuan Tangyu,Wang Li 2004, 20 (1):  71-71.  Abstract + ( 1359 )   PDF ( 93891KB )   ( 625 ) The research was carried out on the effects of 7 agronomic characteristics of maize hybrids on their grain yielding stability, based on regional test materials of summer corns in North China, by using the correlation analysis between regression coefficient and characteristics. The results showed that most agronomic characteristics have negative relevance with yielding stability of hybrids. The most important factors are rows per spike and 1000 grains weight, while spike position and its length、plant height and grains per spike have little relevance. In the practice of breeding, such measures as enhancing selection of those characteristics which have little effects on yielding stability but great effects on grain yielding, properly lowering the height of spike position and increasing grains per spike, are all helpful to improve yielding stability of maize hybrids.

  The Breed selection and Valuation of Super-high yield Multi-resistance and High oil New Soybean Variety Hefeng 45 Guo tai,Liu zhongtang,Liang xiaoli,Zhang ruiping,Huo xiping,Wang zhixin,Wu xiuhong,Zheng wei 2004, 20 (1):  73-73.  Abstract + ( 1603 )   PDF ( 126806KB )   ( 560 ) New soybean variety Hefeng 45 is released by means of sexual hybridization, with female parent suinong 10 and male parent kennong 7. The oil content of this variety is 22.06%, and the protein content is 40.16%. The yield of area test is average of 2920.9 kg/hm2, increasing yield 15.2% compare to CK Hefeng 25. The yield of production test is average of 2826.4kg/hm2, increasing yield 16.4% compare to CK suinong 14. This variety has some good characters such as Disease-resistant, Super-high yield and High oil. It have significant effect to resist Cercospora Sojina Hara, Phytophthoro sojae and Soybean Mosaic Virus. Hefeng 45 spread in 2003. This paper reported the breed selection and experimental results of new soybean variety Hefeng 45, and discussed the key breed technique.

  A Primary Study on the Plant Height and Cell Length of Winter Wheat in Response to Enhanced Ultraviolet-B Radiation Chuanhai Wang Youfei Zheng, Duliang He 2004, 20 (1):  77-77.  Abstract + ( 1497 )   PDF ( 95206KB )   ( 577 ) Plant height and stem cell length of wheat in response to enhanced ultraviolet-B radiation (UV-B) under the field condition is studied, results show that plant height of wheat is decreased significantly by enhanced UV-B radiation, which is attributed to the decrease of the length of stem node, while the number of stem node remains unchanged, and the decreased percentage of stem node length is different, the length of lower stem node decrease more than the others. The shorten of forth and fifth stem node length in response to enhanced UV-B radiation are mainly attributed to the decrease of the cell number per stem node, while the shorten of second and third stem node length are mainly attributed to the decrease of the cell length. There are significantly positive correlation between the shorten of leaves and stem node.

  Studies on Mathematical Modes of Planting and Optimizing Agricultural Characters of Yam Sun Qishan,Wang Qingya,Sun Dunheng,Jin Yingen,Wang Weizhong 2004, 20 (1):  79-79.  Abstract + ( 1880 )   PDF ( 92725KB )   ( 611 ) Integrative planting methods of Yam have been positively tested with two times rotary regression, and the modes of optimizing output has been set up. And the relationship of five testing factors was analyzed with the conception of maximum in Math and the theory of marginal utility of agricultural economics. And the relationship between harvesting the highest output, getting the highest economical effects of Yam (high quality, highest effects) and the weight of earthnut of Yam, the density of planting and the dosage of fertilization of N, P and K was calculated with the average of four factors in five factors. Our aim is to summarize the methods of high output, high quality and optimized agricultural characters.

  Study on application of the Near Infrared Spectroscopy(NIRS) in analyzing maize germplasm quality Duan Minxiao，Wang Yuandong，Guo Jinglun，Xing Jinfeng，Teng Haitao，Zhao Jiuran 2004, 20 (1):  86-86.  Abstract + ( 1591 )   PDF ( 121682KB )   ( 662 ) NIRS was a new method for quality analyzer in crop breeding. The kernel quality of 686 maize inbred lines in 2000 year-2001year and 1438 cross combinations in 2001year-2002year were analyzed in this paper by using near infrared spectroscopy transmission (NIT) analyzer, which was made by FOSS Company. The heterosis of crude-fat, protein and crude starch in corn kernel and the relativity between hybrids and their parents was discussed also. It showed that the range of variation and the coefficient of variation were larger for crude-fat and protein content, the variance range and the coefficient of variation of crude-starch were lesser, the average content was 4.24%～4.27%,11.75%～12.17% and 71.04%～71.10% respectively for the crude-fat, protein and crude-starch in inbred lines, and was 4.53%～4.86%，9.93%～10.05% and 72.56%～72.74% respectively in cross combinations.

  Research Development of Direct Seeding and Zero-tillage Cultivation in Multiple Cropping Systems Zou Yingbin，Li Keqin Ren，Zeming 2004, 20 (1):  90-90.  Abstract + ( 1532 )   PDF ( 175482KB )   ( 921 ) This paper reviewed the development of direct seeding and zero-tillage cultivation in multiple cropping systems, physical, chemical and biological characters of zero-tillage paddy soils, the effects of direct seeding and zero-tillage on the growth development and yield and adaptable techniques for direct seeding and zero- tillage cultivation in rice-oil rape system. This paper also pointed out that the direct seeding and zero- tillage has the same yield potential and more beneficial and needs less labors compared traditional transplantation under pollowed paddy soils. A possible path is of crop cultivation of low input and high profit in China.

  The Influence of Different Ecological Condition on Growth and Yield of High Starch Corn Variety Zhengdan 18 Wang Zhenhua,Zhang Xin,Liu Wencheng,Tian Jifeng,Zhang Qianjin 2004, 20 (1):  98-98.  Abstract + ( 1430 )   PDF ( 98537KB )   ( 547 ) The influence of different ecological condition on growth and yield of Zhengdan 18 was studied. The yield, ear row number and row grain number dropped, the maximum leaf area index declined, the growing process quickened, the growing time became short, along with the postponement of summer sowing. The ecological adaptability for high yield of Zhengdan 18 was that whole growing accumulated temperature was 2674.9-2860.6℃ and whole growing daily mean temperature was 24 .8-25.8℃.

  Factors Affecting the Conception Rate of Embryos Transferred from Boer Goats Zhou Zhanqin ,Wu Hepin, Fu Mingzhe, Chen Xiaoqiang, Pan Rui , Hao Yingchang , Liu Xiuan 2004, 20 (1):  100-100.  Abstract + ( 1454 )   PDF ( 173063KB )   ( 771 ) The factors affecting the conception rate of embryos transferred from Boer Goats and their active mechanisms are discussed in this review.The disease ，low quality of embryo， semen contamination，breeding out of time， low quality of recipient， not synchronous estrus between donor and recipient，antiquated preserve to embryo， hereditary unsoundness，accidental injury by medicament，vaccination，feeding and management to depart from science，immunological reaction and multiple embryo in uterus are the more important factors.

  The analysis of grazing ban policy in China pastoral area Huang Delin,Wang Jimin 2004, 20 (1):  106-106.  Abstract + ( 1222 )   PDF ( 115620KB )   ( 744 ) Using the survey datum which reflected grassland ecosystem, herdsmen's life and livestock production condition before and after grazing ban policy was conducted in pastoral area of Inner Mongolia and Ninxia provinces, the utility function of grazing ban policy was analyzed.

  Effects of Dilludine and Vitamin E on Semen Vitality from Boer Goats Li Guang，Zhou Zhanqin，Wu Heping，Fu Mingzhe 2004, 20 (1):  110-110.  Abstract + ( 1433 )   PDF ( 92020KB )   ( 602 ) Sixteen Boer bucks were randomly divided into four groups in equal number and treated for the ration containing dilludine (50mg?d-1?h-1),VE(15mg?d-1?h-1)and mixture of dilludine and VE,to evaluate their effect on semen vitality from the Boer bucks.The results showed that dilludine and mixture of dilludine and VE significantly promoted the semen vitality of those bucks.

  The Influenced Factors and Countermeasures in Feed Security Zhang Zhengxin,Wang Jun 2004, 20 (1):  112-112.  Abstract + ( 1133 )   PDF ( 118179KB )   ( 621 ) This paper systematically analyzed the main factors which presently influenced the feed security and lay out countermeasures to guarantee feed safety which matched feed industry development of stock raising in China.

  Establishment and application of the key system to the morphology of Helminthism of livestock and poultry Yang Xueyun, Wang kaisheng, Jiang Yueping 2004, 20 (1):  116-116.  Abstract + ( 1508 )   PDF ( 95589KB )   ( 611 ) To make the classification of Helminthism of the livestock and poultry more convenient and short-cuting, the key system was set up by the programming language of Visual Basic. According to the morphologic characters of the orders, families and genuses of Cestoidea, Trematoda and Nematoda, a database was established. The correlative data can be searched easily and quickly. And the key system was set up by simulating the steps of morphologic classification and index, on the basis of the bidirectional index of parasite names and morphology. The system has very practical values in the works of epidemic disease preventing and curing on livestock and poultry, health and quarantine of public, health and quarantine of food, custom quarantine of imports and exports ,the market testing.

  The Effect of Water on the Growth and Deveopment of Alfalfas for Seed Yang Qijian,Liu Yufen,Zhouhe 2004, 20 (1):  119-119.  Abstract + ( 1383 )   PDF ( 130840KB )   ( 713 ) Study on the growth develop and the quality of seed of alfalfa, the result shows that water can effect the growth and develop of alfalfa, also effect on the produce and quality of the seed. There were obvious relationships between the seed output and growth develop. So we know that plant Alfalfa for seed water once is enough.

  Organic Agriculture and Food Safety Du Xiangge，Shan Xunan，Liu Zhiqi，Dong Min，Yang Dongpeng，Qu Zaihong 2004, 20 (1):  122-122.  Abstract + ( 1896 )   PDF ( 119439KB )   ( 1628 ) This paper overviewed the concept, principle and status of organic food ; discussed the specific food quality and safety issues related to organic food of chemical hazards, microbiological hazards specially and other aspects of organic food quality and the relationship of organic food and food safety.

  The Basic Rules for Plant Production of Organic Agriculture in EU Lin Kangmei，Liu Bo，Mao Naihe 2004, 20 (1):  129-129.  Abstract + ( 1377 )   PDF ( 93078KB )   ( 634 ) According to the basic rules for organic agriculture in EU, it is the key measure to go in for production for development of organic agriculture. It guarantees the high safety and the high quality for organic agriculture products (food). It protects the environment and animals and plants. It also guarantees continuous development of the agricultural ecology. The present paper introduces the basic rules for plant production of organic agriculture in EU. It expounds systematically the special case and function .of the basic rules for plant production of organic agriculture.

  Research on the Development of Green Farm Produce in Shaanxi Province Lei Ling，Xu Junhong 2004, 20 (1):  132-132.  Abstract + ( 1311 )   PDF ( 117194KB )   ( 846 ) The development of green farm produce possess very important signification in modern society. There are both factors of advantage and disadvantage for Shaanxi province to develop green farm produces. The development of green farm produce in Shaanxi province can be divided three developing directions based on different agriculture type section, therefore we pose the countermeasure and suggestion for developing green farm produces in Shaanxi province on future.

  Effect of Food and Medicine Fungi on Antifatigue in Mice Liang Junrong, Zhang Xichen, Liu Zengshan, Liu Qingshuang 2004, 20 (1):  135-135.  Abstract + ( 1344 )   PDF ( 92503KB )   ( 616 ) To find antifatigue material from fungi and provide experimental evidence for their application in antifatigue drug and functional food ,this experiment was done. The evaluation of antifatigue function of fungi was studied by the detection of swimming endurance and biochemical indexes. The results showed that Lentinus edodes, etc.could improve the swimming performance of mice , decrease the content of blood urea nitrogen(BUN) and blood lactic acid. It can be considered that all of them can enhance antifatigue function according to related rules.

  The Studies on Correlations of Ssoybean Quality Characters and Bbean Curd Yield Chen Xuezhen,Xie Hao,Jia Haorong,Li Shuchen 2004, 20 (1):  138-138.  Abstract + ( 1373 )   PDF ( 116867KB )   ( 765 ) Correlation Analyses on soybean quality characters and bean curd yield of twenty soybean varieties in Beijing area, the studies showed: 1) It was significant positive with fat content of seed, bean curd wet weight and cubage, bean curd dry weight; 2) The differences was obviously with bean curd yield in varieties.3) There was no correlation among bean curd yield, protein content and coagulant varieties. coagulant could affect the yield of wet bean curd significantly.4) It was significant positive between wet weight and cubage of bean curd, was striking positive with the dry weight of bean curd, the cubage and dry weight of bean curd existed striking positive.5) Appropriative varieties which contained high protein, high adipose, high yield of bean curd could be picked out by the method of LSR.

  The Stability of Extract from Begonia fimbristipula Hance’s Pigment and Optimization of its Processing parameters Lin Qixun Hu Liang Gong Lily Chen liyu 2004, 20 (1):  141-141.  Abstract + ( 1438 )   PDF ( 211333KB )   ( 577 ) In order to improve the extraction rate of fimbristipula Hance’s pigment, the beaker was used to extract the experiment for processing fimbristipula Hance’s pigment, in which methyl alcohol , alcohol, a mixture of 50% methyl alcohol with 50% alcohol and distilled water were used as extracting media to replace pigment from Begonia fimbristipula Hance. The stability of extract of fimbristipula Hance’s pigment was analyzed. An uniform design was carried out to study different influence factors. The effect of alcohol concentration, extraction temperature and extraction time on the extraction process of fimbristipula Hance’s pigment was analyzed. The result showed that fimbristipula Hance’s pigment can dissolve in methyl alcohol, alcohol, mixture of methyl alcohol with alcohol, and distilled water. Dissolvability and quality with alcohol as medium was better than that with methyl alcohol, the mixture of methyl alcohol with alcohol, and distilled water. The extract of fimbristipula Hance’s pigment changes as pH varies, and under pH≤4.1, the extract almost remained bright-purple, while pH ＞4.1, its color gradually faded. As a result. The Begonia fimbristipula Hance’s pigment can only be used as coloring matter for acid food and can not be packaged in a container which contains Zn2 and/or Fe3, and should be preserved in low temperature or normal temperature but avoiding the sunshine for heating or high temperature will easily cause oxidation and fading. A regression analysis of fimbristipula Hance’s pigment with alcohol as medium was carried out and a mathematical model was obtained.

  The Study of Color Changing in the Process of Making Dry Jujube Ai Qijun, Xu Wensheng 2004, 20 (1):  146-146.  Abstract + ( 1350 )   PDF ( 166209KB )   ( 671 ) The effect of rewatering and baking on the color changing of dry jujube during the processing was studied. The result indicated that the temperature and time dad great effect on the changing of the dry jujube as its can promoted the changing of pigment material and Maillard reaction. It points out that lower the temperature and shorten the baking time can enhance the sensous quality of the jujube.

  Effects of controlled-release fertilizers on rice growth TANG Shuanhu XIE Chunsheng CHEN Jiansheng XU Peizhi ZHANG Fabao 2004, 20 (1):  149-149.  Abstract + ( 1396 )   PDF ( 133375KB )   ( 626 ) A Pot trial was conducted to evaluate the effects of 5 controlled-release fertilizers, as single basal application at 1.6 g N /pot, on soil nitrogen supply, rice growth and NPK utilization efficiency. Results showed the N release rate of controlled-release fertilizer BCUF, BNF and BLF treatments were higher than that of conventional specific fertilizer(SRSF) treatment within 30 d after transplanting, and kept relatively sufficient N supply during medium and late of rice growth. As the results of higher productive tiller percentage and seed setting rate, BCUF, BNF and BLF treatments increased yield of rice grain by 21.56%, 6.36% and 5.51% respectively over the SRSF treatment. Meanwhile, treatments of the three control-release fertilizers respectively increased N utilization efficiency by 69.76%, 23.62% and 15.23%, P utilization efficiency by 28.24%, 7.49% and 10.95%, K utilization efficiency by 21.53%, 10.03% and 19.02% in comparison to the SRSF treatment. On the other hand, treatments of the other two controlled-release fertilizers BTF and BAF, probably due to their too slowly supply of N thus limiting both tiller and panicle development, significantly decreased the number of panicles and spikelets per panicle, resulting in yield decrease up to 9.15% and 28.66% respectively. In addition, N, P and K utilization efficiency of BTF and BAF treatments was significantly declined.

  The Effect of N、P and K on High(low)-gluten Wheat Qualities Wang Shaozhong Zhao Shuzhang Fu Guozhan Zhao Shaoqun Chen Yuzhong Liu Jiaping 2004, 20 (1):  152-152.  Abstract + ( 1497 )   PDF ( 98529KB )   ( 677 ) A joint experiment was carried out in four sites of Henan Province with unified design, and the effect of soil fertility and N、P and K on several main quality factors of high(low)-gluten wheat was studied. The change of N content in different parts of wheat plant was determined systematically in various development stages in order to find out the diversity of different types of wheat in N nutrition mechanism during the formation of grain quality and the physiological mechanism that the effect of N、P and K on wheat quality .The result showed that the maintenance of high N content in flag leaves during wheat heading period is the major condition for high-gluten wheat to achieve good quality.

  Study on the poultry manure composting by in-vessel composting system Wang Jun, Huang Hongkun, Dong Hongmin 2004, 20 (1):  159-159.  Abstract + ( 1463 )   PDF ( 122810KB )   ( 672 ) The purpose of this experiment was evaluated the feasibility of treating layer hens manure with the in-vessel composting system. There were three treatments, manure, manure + corn stock, and manure + sawdust. There were no change on organic matter, total nitrogen, and total phosphorus concentration. The pathogen had been destroyed within 5 days in three treatments, and all met the EPA standard.

  The correlation between Al-tolerance and root activity in maize LI De-Hua ,, HE Li-Yuan , LIU Wu-Ding 2004, 20 (1):  161-161.  Abstract + ( 1348 )   PDF ( 135297KB )   ( 989 ) The correlation between Al-tolerance and root activity were studied with inbred lines and part of their F1 generations in maize, by the means of nutritional cultivation. The results indicated that, under Al stress, root reducing ability of Al-tolerant inbred lines was enhanced while TTC reducing ability decreased in Al-sensitive ones, which shows TTC reducing ability of root is closely consistent with the ability of Al-tolerance. The active absorption area in Al-tolerant inbred lines is much larger that of Al-sensitive ones, what’s more, the active absorption area to the total absorption area ratio is even higher compared with the Al-sensitive ones. The oxidbillity of root in Al-tolerant inbred lines could be maintained or slightly increased by aluminum stress while that of sensitive ones decreased. The results suggest that Al-tolerant inbred lines can keep high respiration metabolism when they stressed by Aluminum. The bleeding sap could be decreased in both inbred lines especially Al-sensitive lines when treated with Al.

  鸡粪 化肥 配施 效果 2004, 20 (1):  165-165.  Abstract + ( 914 )   PDF ( 63201KB )   ( 458 )

  EVALUATION OF REGIONAL MIDDLE AND LOW PRODUCTION CROPLAND AND THE COUNTERMEASURE OF IMPROVEMENT AND USE Huang He 2004, 20 (1):  168-168.  Abstract + ( 1276 )   PDF ( 175238KB )   ( 574 ) The cropland with middle and low production and its limiting factors were evaluated based on the integrated technologies of GIS and mathematic model in Licheng county. The results showed that the areas of middle and low production cropland were 2293.39 hm2 and 1594.97hm2, which were 25.49% and 17.72% of total protecting cropland in Licheng, respectively. The middle production cropland mainly distributed in Beigao and Xindu town, and the low production cropland mainly distributed in Beigao town. The major limiting factors of middle production cropland were drought, calcium deficiency, poor, potassium deficiency, phosphorus deficiency and acid limitation, which were 88.76％、18.26％、15.48％、8.18％、7.91％and 6.53％of total middle production cropland, and those of low production cropland were drought, calcium deficiency, poor, obstacle horizon, waterlogging, saline-sodic and acid limitation, which were 96.98％、58.31％、54.89％、18.90％、18.47％、18.47％and 16.28% of total low production cropland. The improvement and use countermeasures of regional cropland with middle and low production were discussed and suggested based on the evaluating results.

  The Difference of Chlorophyll a Fluorescence Parameter in two Common beans Varieties with Heat Tolerance Under High Temperature Stress Gao lihong Shang qingmao Ma haiyan 2004, 20 (1):  173-173.  Abstract + ( 1559 )   PDF ( 174480KB )   ( 706 ) Two different heat-tolerance varieties of common bean (Phaseolus vulgarize L.var.85-CT&BBL-47) were used to study the difference of chlorophyll a fluorescence induction kinetics under high temperature stress (37℃/27℃).The results showed that the chlorophyll fluorescence Fv/Fm and Fv/Fo as well as electron translate rate (ETR) of the two varieties decreased under high temperature stress, but the decrease in heat tolerance variety (85-CT) were less than in heat sensitive variety (BBL-47) .The second kurtosis(M) of chlorophyll fluorescence induction kinetics disappeared in BBL-47 under high temperature stress.

  Approach on the building of Agricultural Science and Technology Exposition Garden of Yantai Agricultural Science Academy Wang Changyun , Li Xiaoliang 2004, 20 (1):  176-176.  Abstract + ( 1430 )   PDF ( 88915KB )   ( 610 ) Agricultural Science and Technology Exposition Garden of Yantai Agricultural Science Academy（Yantai Agri-Expo Garden for short ）is an AAA state grade scenic spot，assembling popularization of Agricultural Science and Technology，ecological-tourism，science dissemination and lie fallow entertainment together in one place.It is a national model base of science for country and a base of science dissemination for youngsters of Yantai，and now declares national first group model spot for agricultural tourism. The Agri-Expo Garden is now only one AAA state grade eco-tourism scenic spot of agricultural science and technology in Shandong Province.

  Double Effects of 3 kinds of Interstock on the Contents of Mineral Nutrient of Tree ——Ⅰ Zhou Kaibing, Xia Renxue, Wang Guiyuan, Wu Qiangsheng 2004, 20 (1):  178-178.  Abstract + ( 1227 )   PDF ( 141223KB )   ( 570 ) Study on the effects of different kinds of interstock on the annual changes in the contents of 8 kinds of mineral nutrient in leaf by doing field experiment with the materials “Newhall navel orange/3 kinds of interstock/trifoliate”. The results indicted the following. 3 kinds of interstock had no obvious effects on the tendencies of the annual changes in the contents of all kinds of mineral nutrient but K and Mg and Mn in leaf, and had noted effects on some phages of annual changes in the contents of K and Mg and Mn in leaf. The contents of K and Mn in leaf among 3 kinds of interstock had remarkable difference during every period of the annum. The contents of the other kinds of mineral nutrient among 3 kinds of interstock had remarkable difference during some periods of the annum. Meanwhile, among the periods when the contents of each mineral nutrient had significant difference, the tendency of the relative difference of the kind of mineral nutrient in one period didn’t always have the same turn as the others.

  Preliminary Study of Culturing Treepeony Containerized Seedlings Zhang Yugang,Guo Shaoxia, Wang lianying 2004, 20 (1):  182-182.  Abstract + ( 1418 )   PDF ( 95348KB )   ( 684 ) The method of culturing treepeony containerized seedlings and absolving epicotyl dormancy of treepeony seeds. Soaking seeds with 4 cm radicle in GA(100ppm) for 24 hours and low temperature (2～4℃) for 25 days could absolve the dormancy. Stratification was good for radicle growth. The root of treepeony was long, so the container must be deep.

  Effect of Grafting and Seedling on “Ha Mi” Muskmelon Yield and Its Resistance to Melon Fusarium Wilt XU Sheng-li, CHEN Xiao-qing 2004, 20 (1):  185-185.  Abstract + ( 1783 )   PDF ( 123905KB )   ( 552 ) “Ha Mi” Muskmelon (Var. saccharinus Naud) was grafted on blackseed pumpkin (Cucurbita ficifolia) to control melon fusarium wilt. The effect of graft and seedling on resistance to melon fusarium wilt and on yield and quality were studied. The result demonstrated that there was high affinity between rootstock and scion by different grafting and seedling. The survival rate of grafted plant was above 95%. It also indicated that the grafted plants were better not only in root system, diameter of stem and leaf area, and single fruit weight, yield and quality, but also in their resistance to fusarium wilt. The controlling effectiveness was above 95.4% in field. The seedlings grown in substance were better for grafting as compared with those grown in soil，even better than no-graft. Yield enhancement of grafted melon was mainly in late stage and it enhanced 75.9%-112.3%.

  The Relation Between Vesicular-Arbuscular Mycorrhizae And Water Metabolism in Plants Wu Qiangsheng , Xia Renxue 2004, 20 (1):  188-188.  Abstract + ( 1544 )   PDF ( 150518KB )   ( 735 ) Most of the experiments have indicated that Vesicular-Arbuscular Mycorrhizae were able to resist water stress ,improve water transportation and enhance ability of resisting drought stress. The paper summarizes that Vesicular-Arbuscular Mycorrhizae accelerate water absorption of host plant in the normal condition of water, advance growth of host plant, improve water metabolism, affect regulative matters and increase survival percentage of seedlings in the condition of water stress. Mechanism that Vesicular-Arbuscular Mycorrhizae can enhance resistance of drought stress in host plants may be many aspects.: (1) Mycorrhizae enlarge root areas of host plant; (2) Mycorrhizae stimulate hormone to regulate metabolism ; (3)Mycorrhizae enhance absorption of mineral nutrition; (4) Mycorrhizal hyphae have special channels of water transported; (5) Mycorrhizae are due to mechanism of direct absorption of mycorrhizal hypha and indirect regulation of physiological function .

  Herbicide Activity of New Sulfonylurea Herbicide NK#94827 Fan Zhijin, Wang Lingxiu, Chen Junpeng, Li Zhengming 2004, 20 (1):  198-198.  Abstract + ( 1466 )   PDF ( 95379KB )   ( 684 ) Herbicide acticity of new sulfonylurea herbicide NK#94827 was screened by bioassay of tap root of Brassica napus L., the results indicated that, the herbicide activity of NK#94827 was equal to that of chlorsulfuron and tribenuron-methyl. Furthere study by siol treatment in laboratory revealed that, NK#94827 possessed good herbicide activity to Acalypha australis L. and Echinochloa phyllopogon (staf) Koss. Maize growth inhibition of NK#94827 was lower than that of chlorsulfuron and tribenuron-methyl, however, it was greater than that of foramsulfuron. The results of pot bioassay in greenhouse indicated that, Triticum, aestivum L. and Oryza sativa L. were safe to NK#94827 at application dosage of 15g/hm2 and 30g/hm2 of soil treatment and foliage spraying, while phototoxicity to Glycine max, Avena sativa L. and Brassica napus L. was observed in all treatments of this study.

  Field Experimental Results of 15% Carbofuran-Carbendazim- Thiram for Seed Coating Treatment Li Xiaolin Luo Jun Hu Qiang Zhu Jianjun Li Jianqiang Liu Xili Pu Entang Zhang Song 2004, 20 (1):  201-201.  Abstract + ( 1538 )   PDF ( 126064KB )   ( 527 ) This study reported the field experimental results of 15% arbofuran-Carbendazim- Thiram for Seed Coating Treatment (CCT SC) in 8 trial plot with different ecological condition in Yunnan province. The results showed that CCT SC provided integrated control of seed-borne and soil-borne disease, seedling insect, and good seedling growing. Coating treatment with this chemical increased seed germination and seedling emergence, fresh weight of 100 plants, amount of stem and leave of seedling, and field yield at significance level. This seed coating chemical is specific for developing and extension in Yunnan province. The chemical / seed ratio is 1:40, and should change a little in different ecological environment.

  Dynamic Analysis of Internal Distribution Patterns of Ricefield Dominant Spiders and Objective Pests Xia Weifu 2004, 20 (1):  207-207.  Abstract + ( 1186 )   PDF ( 99924KB )   ( 533 ) This article dealed with the internal distribution patterns of paddyfield dominant spiders and objective pests(rice planthopper and rice leafhopper) in different development period of lately rice by means of several indexes of aggregation , the results showed that their internal distribution changed with the development period of rice. This result provide basis for strategies of IPM.

  Study Advances and C-ountermeasures on Blast Resistance of Rice Liu Guoquan Meng Zhaohe Ren Yanjun Li Chunguang Liu Yongwei Meng Qiaoxia 2004, 20 (1):  211-211.  Abstract + ( 1841 )   PDF ( 119478KB )   ( 1309 ) Rice blast is a kind of epiphyte disease by Magnaporthe grisea. Rice blast is one of rice main disease, which threaten badly rice production. It not only decreased rice yield by 10-30%, but also debase quality of rice. In this thesis, analyzed in detail study advances of rice blast, summarized countermeasures of prevention and cure rice blast. On the basis of that, put forward synthetical countermeasure of prevention and cure completely rice blast. At first, plant rice variety with high rice blast resistance; then, use the mixture cultivated technology of rice diversity and rice blast control in rice; finally, adopt prevention and cure rice blast by chemical pesticide.

  Advances in the Research on sealing sheet fumigation Zhu Guang-yao, Zhou Bo-jun, , Zhang Shao-hong, Qiao Nan-fang, Jiao Guo-yao, 2004, 20 (1):  215-215.  Abstract + ( 936 )   PDF ( 97017KB )   ( 503 ) This paper reviews the progress of research and application on sealing sheet fumigation in recent years.

  The Present Condition and Thinking on the Transformation and Application of Agricultural Sci-Tech Achievements in Shaanxi Province Zhang Junjie, Li Sixun 2004, 20 (1):  224-224.  Abstract + ( 1510 )   PDF ( 118811KB )   ( 609 ) Since the reforming and opening, the transformation and application of agricultural sci-tech achievements in Shaanxi province have gained great progress, but there are still many problems, such as, lower transformation rate, inadequate fund, backward system of origination, changeful popularization groups and lower-knowledge-level farmer. Through analyzing the opportunity for progress and the facing barrier, this article gives some countermeasures and advices, Which are to establish scientific and reasonal safe guard system of policy and law, build the substantial basis of sci-tech innovation, introducing varied popularizing-system, practice efficient and agile running-system, exploit diversiform systems of investing and absorbing capital mainly based on the government and organize efficient and capable popularization group.

  Adapt to the demand of WTO,developing unpolluted vegetable Wu Shi-xin,Yang Shao-wei,Lv Jincang 2004, 20 (1):  228-228.  Abstract + ( 1326 )   PDF ( 89621KB )   ( 512 ) the article studies on developing facility unpolluted vegetable significance,advantage and disadvantage factors、basic principia of developing it in BaoJi.We give six key measures in cultivation and plant.the article server as reference for developing facility unpolluted vegetable at present.

  Study on model of agicultunal Science and technigue district With planting and breedrng in mid-tempenate agriculture zone of china Wang Gagn,Wang Zhanzhe 2004, 20 (1):  231-231.  Abstract + ( 1325 )   PDF ( 64668KB )   ( 604 ) According to the regional characteristics ang requirement to develop district of agricutural Science and technique The study summarized The formation,characteristics,type and applic at ion ofdistrict model of aqricultural Science and mid-tenperate farm zone of China, which provided basis and reference for the development of agricultural Science and technique district.

  The Rice Production and Current Situation of Scientific Researches in Heilongjiang Province Sun Shuhong 2004, 20 (1):  233-233.  Abstract + ( 1154 )   PDF ( 95340KB )   ( 681 ) Rice area is increasing ,per unit area yield and total yield is rising through a series of cultural technique of high yield in Heilongjiang province at present. But there are lots of question in rice production. In the thesis,I point out countermeasures to question . Scientific research units require achievement and study way in future.

  Establishing Agri-Tech Extension Media System(ATEMS) to Meet Market Economy Chen ZhiJian,Zheng GuangHua,Cheng ShuTian, Zheng YiZhi,Lin Shu 2004, 20 (1):  236-236.  Abstract + ( 1351 )   PDF ( 142827KB )   ( 591 ) This paper deals with the current situation of Fujian Agri-Tech Extension Service System (ATESS),analyzing the problems it face,putting forth some ideas and suggestions on improving the ATESS with pluralization in organizations,diversification in forms,marketization in operation scheme,and legalization in gurantee measures