Current issue

• 2017 Vol.33 No.17 Published:16 June 2017

  Coupling Effect of Different Rice Cultivars and Regions on Rice Cadmium Content and Quality Sun Yali,Xu Qingguo,Liu Hongmei,Li Xianzhe,Yang Ming and Chen Lu 2017, 33 (17):  1-7.  DOI: 10.11924/j.issn.1000-6850.casb16090103 Abstract + ( 1298 )   PDF ( 474KB )   ( 359 ) In order to study the cadmium content of rice varieties in different rice-growing areas and its relationship with quality. 46 rice cultivars (lines), such as ‘Qifengzhan’, ‘Xiangzhijing’, ‘Yuxiangyouzhan’, which from Changsha and Huizhou are used for materials with Atomic absorption spectrometry and FOSS automatic flow injection instrument to measure the cadmium content and rice quality. The results are as follows：(1) The differences of cadmium content between different rice cultivars（lines）and different planting areas (Changsha and Huizhou) were significant. The average cadmium content of rice in Changsha is twice as much as Huizhou. (2) The rice quality of different rice varieties (lines) planted in Huizhou was better than that in Changsha. (3) Rice cadmium content had a markedly correlation with gel consistency and protein content in Changsha, and shown a negatively correlation with brown rice rate and milled rice rate in Huizhou. And it didn’t ran up to a significant level with other rice quality traits. The environment of paddy field in Huizhou is more favorable for planting rice,‘xiangwan12-32’,‘xiangwanxian12’,‘xiangwan6-31’etc. were low-Cd accumulation varieties and can be extended. The cadmium content of‘jiafuzhan’, ‘9311selected’,‘Ryunyu90’etc. had exceeded national standard and cannot be promoted as a production varieties.

  Agronomic Characters of Spring Wheat Under Salt Stress Zhu Yongxing,Guo Shenghu,Dong Jianli and Guan Yajing 2017, 33 (17):  8-11.  DOI: 10.11924/j.issn.1000-6850.casb16050167 Abstract + ( 1055 )   PDF ( 620KB )   ( 406 ) Salt stress is one of the main factors that restrict wheat yield. In order to study the salt tolerance of wheat recombinant inbred lines in filed salt environment, the authors used two wheat varieties ‘Ningchun No.27’, ‘Ningchun 4’ and eight wheat lines ‘R9’, ‘R32’, ‘R39’, ‘R75’, ‘R88’, ‘R89’, ‘R103’, ‘R108’, ‘R117’, ‘R129’, ‘R130’ as the objects, to evaluate salt tolerance through investigation and analysis of agronomic characters during the whole growth period. The experiment results showed that in field salt environment with 0.35% total salt content, the analysis of plant height, ear length, ear weight, grain number per spike and yield per plot indicated that ‘R32’ strain had the highest plant height, significantly higher than that of the parents, ear length, ear weight and grain number per panicle of‘R75’ were significantly higher than those of the parents, and ‘R88’, ‘R108’ had obviously higher plot yield than that of their parents. Therefore, by comparing the field performance and agronomic characters, ‘R75’, ‘R88’ and ‘R108’ had relatively strong field salt tolerance.

  Screening of a Strain Producing Alkaline Xylanase and Optimization of Fermentation Conditions Yi Xudong,Pan Hu,Tian Yun,Liu Bolun and Lin Yuanshan 2017, 33 (17):  12-18.  DOI: 10.11924/j.issn.1000-6850.casb16100089 Abstract + ( 1045 )   PDF ( 860KB )   ( 686 ) Alkaline xylanase widely used in paper making，textile and other fields．In screening the strains of the high-yield alkaline xylanase, a alkaline xylanase generating strain YH158 is isolated from the soil of the botanical garden in Jincheng City, Shanxi Province by congo red color reaction. Morphological test and 16S rDNA sequence analysis were employed to confirm as bacillus methylotrophicus. After one factor was used to optimize, and the orthogonal test including four factors and three levels were employed to analyze, the superior fermentation medium formulation was determined：wheat bran5.0%, soyabean extraction 0.7%, MnSO4 0.1%,The optimal culture condition: initial cultural pH 8.0;temperature 37 ℃ ;agitation 180 r/min; fermentation period 36 h. The enzyme activity in supernatant of the fermentation broth was 28.18 IU/mL. Xylanase produced by this bacterium shows preferred alkaline adaptability, and its hydrolysis products are rich in xylo-oligosaccharide with 2-5 xylose molecules, displaying higher industrialization prospect.

  Viscoelastic Changes and Cold Tolerance Comparison of Arabidopsis and Tobacco Cells Under Low Temperature Stress Deng Jun,Zhou Tiean,Hu Jiajin,Chen Zongxing and Xie Jie 2017, 33 (17):  19-23.  DOI: 10.11924/j.issn.1000-6850.casb17030159 Abstract + ( 1146 )   PDF ( 4090KB )   ( 658 ) Positively charged poly(diallyldimethylammonium chloride) (PDADMAC)modified quartz crystal microbalance (QCM) was used for the real-time monitoring of the viscoelastic changes of Arabidopsis suspension cells and BY-2 cells when they were subjected to low temperature stress to compare cold tolerance of these two types of plant cells. The results showed that as the decrease of the temperature, the cell viscoelastic index (CVI) of both types of the cells decreased and the cells became harder, the lower the temperature, the larger the drop in CVI. Over the temperature drop range (25°C-5°C), the change in CVI for Arabidopsis cells is smaller than that of BY-2 cells, which is consistent with that Arabidopsis has better cold tolerance than that of Nicotiana tabacumL. Therefore, we propose to use CVI as a new parameter to indicate the cold tolerance of plant cells.

  Bioinformatics Analysis of GATA Transcription Factor in Pepper Yuan Qi,Zhang Chunli,Zhao Tingting and Xu Xiangyang 2017, 33 (17):  24-31.  DOI: 10.11924/j.issn.1000-6850.casb17030137 Abstract + ( 1255 )   PDF ( 1099KB )   ( 621 ) Abstract: The aim of this study was to analyze and identify the bioinformatics features of the family members of GATA transcription factors in pepper. It lays the foundation for further experimental research for the future.By means of bioinformatics means, HMMER and SMART software were used to identify the GATA transcription factors in pepper. Bioinformatics analysis of GATA transcription factor in pepper was carried out by software such as Clustal X 1.83, MEGA5.05, GSDS and MEME. This study identified 24 members of the GATA transcription factor family in pepper. The results of phylogenetic tree showed that the 24 GATA family members could be divided into 4 subgroups. The results of GSDS software showed that the distribution of intron and exon of GATA transcription factor in pepper. The results of DNAMAN software and MEME software showed that most of the GATA transcription factors in pepper were conserved. Chromosome localization software MapInspect analysis showed that the GATA transcription factor of pepper was not evenly distributed on 12 chromosomes of pepper. This study identified and analyzed the bioinformatics characteristics of GATA transcription factors in pepper, which provided a theoretical basis and practical significance for further study of its function.

  Bioinformatics Analysis of Trihelix Transcription Factors from Chilli Pepper Zhang Chunli,Yuan Qi,Zhao Tingting and Xu Xiangyang 2017, 33 (17):  32-38.  DOI: 10.11924/j.issn.1000-6850.casb17030144 Abstract + ( 1218 )   PDF ( 1345KB )   ( 495 ) Abstract: Trihelix transcription factors play a significant role in the regulation of plant growth and development, as well as in response to environmental stresses, and belong to a small family. In order to provide theoretical basis for further study of biology function of pepper Trihelix transcription factors, this paper systematically elaborates the characteristics and phylogenetic relationships of pepper Trihelix transcription factor family. Based on the pepper genome database, pepper Trihelix gene family were identified using HMMER 3.0 software and the functional domain of the protein was verified by CDD. A phylogenetic tree was created using the MEGA5.2 software. Motif and chromosomes locations of protein sequence were done by MEME and MapInspect tools. Identified systematically 28 Trihelix family genes from pepper, then was classified into GT-1、GT-2、GTγ、SIP1 and SH4 five subfamilies according to the known Arabidopsis thaliana Trihelix protein family as reference sequences. Gene mapping analysis showed that pepper Trihelix genes were distributed unevenly on 12 chromosomes, among which there was no distribution of pepper Trihelix members on chromosomes 7 and 11. Conserved components analysis indicated that the part of pepper Trihelix genes family was highly conserved, and each subfamily has a special domain. These results suggested that the majority of pepper Trihelix genes were highly conserved, conservative motif and the cluster analysis have a consistence?of high degree and might participated in the multiple regulation process of growth, development and environmental stress in pepper.

  Superior Provenances of Quercus acutissima: A Preliminary Selection in Central Jiangxi Chen Kang,Qu Yongjian,Zhou Min,Zhang Luhua and Cheng Xiangrong 2017, 33 (17):  39-43.  DOI: 10.11924/j.issn.1000-6850.casb16060157 Abstract + ( 676 )   PDF ( 589KB )   ( 396 ) [Objective]We investigated the growth of young Quercus acutissima through provenance trials to select suitable Quercus acutissima provenance forests for middle Jiangxi province.[Method]Provenance trials of Quercus acutissima was carried out at Yongfeng Guanshan Forest Farm in the Central Jiangxi Province, using randomly complete block design. 2-year-old seedlings of 32 provenances were investigated, including survival rate, tree height, ground diameter and biomass. [Result]The results showed that survival rate of the most of the provenances were more than 89%, annual growth of tree height, ground diameter and plant biomass had greater variability among these provenances. These 32 provenances were divided into three groups by cluster analysis, the first group was superior provenance, including 11 provenances, such as Zhejiang, Guizhou; the second group was poor provenances, the third group was moderate provenances. [Conclusion]The results of this study would provide a guide for preliminary selection of superior provenances in Q.acutissima in the Central Jiangxi Province.

  Effect of Nitrogen Form Ratio on Neutral Aroma Constituents Contents,Yield and Quality of Flue-cured Tobacco Ma Xinghua,Xu Jingnian,Zu Chaolong and Shi Yi 2017, 33 (17):  44-48.  DOI: 10.11924/j.issn.1000-6850.casb16060033 Abstract + ( 573 )   PDF ( 476KB )   ( 302 ) [Objective][Method]In order to detect the effect of different ratios of ammonium to nitrate (ammonium, NH4 vs nitrate, NO3- ) on chemical components, neutral aroma constituents contents, sensory quality and yield, field experiment was conducted. [Result]The results showed that NH4 plus NO3- increased total sugar content, reducing sugar content and potassium content ,and reduced the nicotine content. The aroma constituents of carotenoids, phenylalanine, maillard reaction products and cembranenoids of the treatments of NH4 plus NO3- were higher than those of the treatment with NH4 only, but had little difference to the treatment with sole NO3- supply. Total neutral aroma constituents content and the neophytadiene content of the treatment with sole NO3- supply were higher than those of other treatments, followed by the treatment 30% NH4 plus 70% NO3-. The sensory quality of treatment 30% NH4 plus 70% NO3- was better than that of other treatments, followed by the treatment 50% NH4 plus 50% NO3-. The output value of treatment 50% NH4 plus 50% NO3- was better than that of other treatments, followed by the treatment 30% NH4 plus 70% NO3-. [Conclusion]Under the experimental condition, the best proportion of ammonium and nitrate was 30% or 50% and 50% or 70% respectively taking account of quality and economic.

  Development Process and Matter Accumulation of Flue-cured Tobacco Wang Jun,Jin Yabo,Wei Jianyu,Wen Zhiqiang,Liu Lan and Ding Xiaodong 2017, 33 (17):  49-57.  DOI: 10.11924/j.issn.1000-6850.casb16100114 Abstract + ( 1147 )   PDF ( 986KB )   ( 398 ) In order to investigate the application of organic materials with ridge mulching measures on growth and developmental advancement, material accumulation of flue-cured tobacco during growth period. Field split plot experiment were carried out to study the effect of applying organic materials combined with hilling and mulching straw after uncovering plastic film on tobacco tobacco field growth period, leaf age and different parts of different growth stages of different organs of dry matter and nitrogen, phosphorus and potassium accumulation. The results * showed that: (1) application of 14925.37 kg/hm2 organic materials combined with earth cover measures can shorten the average root extension period 6d, and extend fast growing, maturation and the field growth stage 15d, 10d and 19d respectively, and the next, upper, middle and lower leaves age 5.4 d, 9.5 d and 8.8 respectively. (2) hilling and mulching straw after uncovering plastic film significantly increased tobacco leaf number, stem height, stem girth, length and width of tobacco leaf, root and stem dry matter accumulation, and tobacco root, stem and whole plant nitrogen accumulation of stem and leaf P accumulation and root K accumulation increased significantly. (3) with the increasing quantities of organic material, tobacco leaf number, stem height, stem girth, maximum leaf length and width and material accumulation increased, among them, the application of 14925.37 kg/hm2 organic material treatment plant dry matter accumulation increased by an average of 0.27 kg/hm2 compared with no application of organic materials, the accumulation of nitrogen and phosphorus in root and stem, potassium in leaf and whole plant tobacco increased significantly. Applying organic materials combined with hilling and mulching straw after uncovering plastic film can effectively promote the tobacco plant grow quickly , optimize the tobacco growth process effectively, prolong the growth period and promote the material accumulation of tobacco plant, and thus enhance the ripening enduring ability of tobacco leaf in field.

  Breeding of New Safflower Varieties ‘Yunhonghua No.5’ and ‘Yunhonghua No.6’with Flower and Oil Application Hu Xueli,Hu Zunhong,Yang Jin,Wang Peiqi,Guo Lifen,Zhang Xishun and Liu Xuyun 2017, 33 (17):  58-65.  DOI: 10.11924/j.issn.1000-6850.casb16100016 Abstract + ( 1042 )   PDF ( 633KB )   ( 432 ) "Yunhonghua No.5 Yunhonghua No.6 are new flower oil dual-use varieties being developed through systematic selection by Industrial Crop Institute,Yunnan academy of agricultural sciences (YAAS) . The growth of the varieties were 178d and 183d. In 2013-2014 year multi-point test, the average seed yield were 2166 kg/hm2 and 2161.8 kg/hm2, increase18.47 % and 18.24% compared with the average seed yield per hectare of the control varieties. The average petal yield were 512.1kg / hm2 and 529.95kg / hm2, increase 20.00% and 24.18% compared with the average petals yield per hectare of the control varieties .Its main characteristics were unarmed, suitable height ,easy picking, color red, moderate growth period, high yield, high oil content (29.1% and 26.3%), high linoleic acid (81.95% and 80.86%) ,disease resistance, drought resistance and wide adaptability. Yunnan safflower production and demonstration had been played a good role in promoting the safflower industry. The varieties were known as "Yunhonghua No.5 and Yunhonghua No.6 by Yunnan seed management station after identification in April 2015.The two varieties had high economic and social benefits significantly combined with the cultivation techniques, were suitable for planting area of altitude (1000-1600m) in Nujiang, Lancang River, Yuanjiang River, Red River, Jinsha River and the area of its tributary valley and the same ecological type,also to adapt to Xinjiang safflower planting areas.

  Soybean Pollen Vitality Testing by Different Methods Cao Fang,Li Zhigang,Li Xuxin,Yu Debin and Guo Yu 2017, 33 (17):  66-69.  DOI: 10.11924/j.issn.1000-6850.casb16120021 Abstract + ( 894 )   PDF ( 565KB )   ( 458 ) In order to study different methods for determination of soybean pollen vitality, SuiNong4、JiLin47 and CK-P were studied, through single factor orthogonal test to sucrose ,agar, H3BO3 and temperature, filtered the culture medium for pollen germination , the difference of pollen viability between I2-KI, TTC staining and in vitro germination were compared. The results showed that the I2-KI staining method was easy to operate, because the method was more simple than the in vitro germination method, the determination result was accurate, the cost was low and the time was short,so it was used to test pollen vitality . TTC and I2-KI staining method was similar, there was no difference, but also can be used as a method to detect soybean pollen vitality. The method of vitro germination of pollen viability was related to many factors,and I2-KI and TTC staining were significantly different, and its preparations were complex and cumbersome, so I2-KI and TTC staining method can be used to determine soybean pollen viability.

  Reviews on Ecological Stoichiometry Characteristics of CNP in Terrestrial and Aquatic Plants Liu Cenwei,Zheng Xiangli,Wang Junhong,Xu Guozhong and Huang Yibin 2017, 33 (17):  70-75.  DOI: 10.11924/j.issn.1000-6850.casb16090094 Abstract + ( 826 )   PDF ( 484KB )   ( 475 ) Ecological stoichiometry has become the hotspot research of ecology, which can be used to unify all ecological processes based on multiple chemical elements. To better understand the ecological stoichiometry characteristics respond to terrestrial and aquatic ecosystem, this study first focused on these ratios in different environment at large scale. Second, using ecological stoichiometric to clarify the effect of growing environment change on ecosystem structure, function and stability, which varied with the change of nutrient availability, fertilization, species and growth rate.

  Cadmium Accumulation and Yield Difference of Different Rice Varieties Under Cadmium Stress Wang Gang,Sun Mengfei,Zhong Xuemei,Peng Jianwei,Rong Xiangmin,Kang Xingrong,Xie Guixian and Zhang Yuping 2017, 33 (17):  76-81.  DOI: 10.11924/j.issn.1000-6850.casb17010090 Abstract + ( 661 )   PDF ( 561KB )   ( 445 ) Abstract:【Research objectives】Study on Cd content in rice plants and Cd accumulation in different parts of rice under the Cd stress, to select out high Cd resistance and high-producing rice varieties.【Method】Take different varieties of japonica and indica rices as the research objects, by pot experiment, under two treatments of no adding Cd and Cd stress, discuss Cd content and Cd accumulation situation of different rice varieties in harvest time.【Consequence】Under the situation of no adding Cd and Cd stress treatment, Cd content in rice plant is generally Root>stem>leaf>the chaff>rice, and the Cd mainly concentrated in roots; varieties of Cds have differences in rice plants’ accumulation and distribution, especially the greater Cd accumulation in rice. Among 8 semilate rice varieties, the lowest increasing degree of Cd content is “Spring 84”, which shows a bit lower Cd accumulation ability; at the same time, it shows that under the Cd stress , japonica Cd accumulation is higher than nonglutinous rice. In terms of production, the production of indica reduced rapidly under the Cd stress,however, the japonica rices’ production all increased. 【Conclusion】Under the Cd stress,“Spring 84”has the lowest grains’ Cd content amplification, and it shows significantly Cd tolerance. Although its production has been influenced, from the security of cadmium, it can be used as a selection of Hunan Province’s Cd pollution regional varieties to be spread.

  Offshore Petroleum Degrading Bacteria: Screening, Identification and Degradation Property in Hainan Wen Shaobai,Niu Zongliang,Ji Yuxiang and Tang Tianle 2017, 33 (17):  82-86.  DOI: 10.11924/j.issn.1000-6850.casb16080061 Abstract + ( 651 )   PDF ( 759KB )   ( 359 ) This study focused on the screening of highly efficient petroleum degrading bacteria. The petroleum-degrading strain X10 is based on diesel as the sole carbon source, which was separated by primary and secondary screening from the petroleum-contaminated coastal area of Hainan Province. 16S rDNA sequencing was showed that the strain was identified as Achromatium. Diesel was degraded is 69.39%. Meanwhile, the effects of pH, culture temperature, initial inoculation amount and external carbon source on the degradation ability of diesel were studied. The results showed that strain X10 had the best degradation effect at the initial pH 6.0 under the experimental conditions. The strain can adapt to a wide range of PH value. The culture temperature had a significant influence on the petroleum degradation rate. The degradation rate was 67.94% at 30℃, which is the optimum temperature. The optimum inoculation amount was 5%. The degradation rate of diesel was enhanced by the addition of external carbon sources, such as glucose, lactose and mannitol. However, there were no significant differences among these external carbon sources.

  Grassland Degradation Analysis in Sichuan Based on RS and GIS Li Li and Li Feng 2017, 33 (17):  87-91.  DOI: 10.11924/j.issn.1000-6850.casb16090006 Abstract + ( 859 )   PDF ( 1215KB )   ( 377 ) Grassland degradation in the world today are facing a very serious ecological problems.Monitoring of grassland degradation of vegetation coverage, as one of the important indicators, the grassland degradation and desertification control plays an important role.Using 2000-2010 MODIS MODl3Q1, NDVI data products, choose grass vegetation coverage as remote sensing monitoring index of grassland degradation, the aba and ganzi, sichuan province, liangzhou district for more than 10 years the situation of the grassland degradation were analyzed.Results show that in 2001, the grassland vegetation coverage of sliding average do "benchmarks", it is concluded that 2002-2010 in aba, liangzhou and ganzi state grassland degradation is about 698718.75 hm2.And the overall degradation area in the recent ten years is on the rise, grassland degradation situation has become increasingly serious.

  Suitability Regionalization for Highland Barley in Tibet Based on Climate, Land Use Information and GIS Yuan Lei and Liu Yilan 2017, 33 (17):  92-97.  DOI: 10.11924/j.issn.1000-6850.casb16060101 Abstract + ( 980 )   PDF ( 1948KB )   ( 382 ) Using CMA Land Data Assimilaton System Version 1.0(CLDAS V1.0) from 2009-2013 as climate data source, Combining with the key climate factors that affects the Tibet highland barley planting, three climatic factors including ≥0℃ accumulated temperature during highland barley growth，average temperature of the most month, precipitation during highland barley growth were chosen as the indices of highland barley—planting regionalization, By using GIS-spatial analyst technology，the regionalization of the climate suitability in highland barley -planting in Tibet Was conducted．After superposed landuse information on the climatic regionalization，the highland barley—planting areas which could both satisfy climatic demand and satisfy practically suitable farmland were determined．The results showed that the most suitable planting area of highland barley was Yu Yajiang middle river valley area and central and southern of Qamdo. The result is consistent with the fact.

  Variation Characteristics of Fog Days in Jinan from 1961 to 2014 Su Yi,Liu Shufeng and Yin Chengmei 2017, 33 (17):  98-101.  DOI: 10.11924/j.issn.1000-6850.casb16070005 Abstract + ( 675 )   PDF ( 561KB )   ( 334 ) The paper aims to improve the forecast level of fog, Based on the daily meteorological data obtained from Jinan National Surface Meteorological Observation Station during 1961-2014, we analyzed the variation trend of fog days used the linear trend estimation method and assess the abnormal conditions of fog days by using the anomaly evaluation criterion.The results showed that: there were decreasing trends for both annual and seasonal variation from 1961 to 2014 with a linear tendency rate of -1.362 d/10 a. The date of the annual average fog days was 16 days, the minimum value was 5 days appeared in 1969、2008 and 2010, and the maximum value was 39 days in 1964. There was 1 year which was significantly less than others. There were 5 years which were less than others. There were 41 years which were normal. There were 2 years which were more than others. There were 2 years which were significantly more than others. There were 3 years which were obviously more than others. For the seasonal variation linear tendency rate, the peak value was -0.444 d/10 a in fall, and the lowest value was -0.211 d/10 a in winter. It was 1.5 and 6.5 days for the mean seasonal fog days in spring and winter, respectively, which were the minimum and maximum date in the four seasons. The number of normal years was 50 for the fog days in spring, and spring was the season with the least number of abnormal years; while it was 34 for the number of normal years in winter, and winter was the season with the biggest number of abnormal years.

  The Establishment of Pollution Weather Prediction Method in Qingyang Han Jing,Cao Yanchao and Zhang Feng 2017, 33 (17):  102-107.  DOI: 10.11924/j.issn.1000-6850.casb16090058 Abstract + ( 745 )   PDF ( 626KB )   ( 356 ) This paper established a pollution weather prediction method that suitable in Qing yang city, based on the correlation analysis of air pollution data, monitored by the environmental protection authorities, and Surface and upper-air Meteorological Observational data. The method was: shift the Meteorological parameters which have a high correlation with the Air Pollutant Factors (API), then use the shifted meteorological parameter data build up regression prediction equations. The paper verified the established method through comparing the calculation and the monitoring air pollution data, the results showed that the established equation calculate results were comparatively accurate for the summer, autumn, winter and the whole year air pollution prediction, but had a poor accuracy in spring.

  Coating Compound Trace Elements Affecting Growth Performance, Fecal Trace Elements Contents and Intestinal Mucosal Morphology of Yellow Broilers Zhang Min,Ren Xin,Ke Furong,Ma Zengxin and Wang Changkang 2017, 33 (17):  108-112.  DOI: 10.11924/j.issn.1000-6850.casb16060158 Abstract + ( 1186 )   PDF ( 506KB )   ( 323 ) This experiment was conducted to study the effects of coating compound trace mineral on growth performance, fecal trace mineral content and intestinal tract morphology in yellow broilers. [Method] 375 one-day-old yellow broilers were randomly allocated to 5 groups with 5 replicates per group and 15 chicks per replicate. Group Ⅰ as Control group was fed basal diet with conventional trace mineral. Group Ⅱ to Ⅴ were fed basal diet with 200 mg·kg-1, 300 mg·kg-1, 400 mg·kg-1, 500 mg·kg-1 coating compound trace mineral. The experiment lasted 4 weeks. The growth performance, fecal trace mineral content and intestinal tract morphology of yellow broilers were tested. [Result]The results were showed as followed. The feed-weight ratio of yellow broilers of group Ⅲ compared with control group was not significant, so as the group Ⅳ and groupⅤ. The feed-weight ratio of yellow broilers of group Ⅱ improved than the control group(P<0.05). The differences of average daily gain and average daily feed intake of each group were not significant. Compared with control group, trace mineral of group Ⅱ decreased iron(Fe) of fecal trace mineral content(P<0.05) and copper (Cu), manganese (Mn) and zinc (Zn) decreased significantly(P<0.01). Group Ⅲ decreased the content of Cu, Fe, Mn and Zn in fecal trace mineral significantly compared with group Ⅰ(P<0.01). The content of Fe and Mn in the fecal trace mineral of group Ⅳ decreased significantly compared with groupⅠ(P<0.01). The content of Mn and Zn in fecal trace mineral of group Ⅴ decreased significantly compared with groupⅠ(P<0.01). The crypt depth of duodenal of group Ⅳ reduced significantly (P<0.05)and the ratio of villus height to crypt depth significantly increased compared with groupⅠ(P<0.05). [Conclusion] Conclusion, rations of yellow broilers used coating compound trace mineral instead of conventional trace mineral can decrease the content of trace mineral and didn’t affect the growth performance of yellow broilers. It can decrease the content of trace mineral in fecal and promote the ratio of villus height to crypt depth of duodenal. The appropriate additive dosage was between 300mg·kg-1 and 400mg·kg-1.

  Experiment of Micro-bubble Aerator Xiao Ying,Pei Yi,Yao Bangsong and Tang Rong 2017, 33 (17):  113-116.  DOI: 10.11924/j.issn.1000-6850.casb17030033 Abstract + ( 738 )   PDF ( 582KB )   ( 756 ) Abstract: Aiming at the large volume and high energy consumption of the existing aerators, we designed a micro-bubble aerator based on the principle of jet pump technology. The main body of the device was divided into four parts, and the optimal parameters of these parts were determined by experiment. The results showed that when the liquid flow was 4.23 m3/h, nozzle-to-throat clearance was 40 mm, and throat-pipe length was 120 mm, the optimum oxygen-adding effect could be obtained. In this case, the dissolved oxygen amount in the water was 11.23 mg/L, which was in super saturation state and higher than the saturation value (10.83 mg/L) at 12℃. This device has a wide application value in aquaculture, sewage treatment and aerated irrigation due to its obvious oxygen-adding effect, simple structure and small volume.

  Correlation Between Chlorophyll Content and SpectralCharacteristics of Rice Leaves Under Rice Blast Xie Kai,Jiang Ping and Luo Yahui 2017, 33 (17):  117-122.  DOI: 10.11924/j.issn.1000-6850.casb17030124 Abstract + ( 806 )   PDF ( 719KB )   ( 478 ) In order to realize the hyperspectral inversion of chlorophyll content in rice leaves infected with rice blast,the chlorophyll content and hyperspectral reflectance of 85 rice leaf samples infected by rice blast were measured and analyzed. The correlation between the hyperspectral reflectance and the chlorophyll content of rice leaves infected by rice blast was also analyzed. The linear and non-linear regression techniques were then used to establish the chlorophyll content of the inversion model.The results showed that the sensitivity of the chlorophyll content to both the original spectra and the first derivative spectra occurred at 700 nm and 752 nm respectively. The regression model was based on the spectral characteristic parameter SDr had a mean square error of 1.27 and an average relative error of 10.2 %.The results showed that the spectral reflectance of rice leaves infected with rice blast was significantly different. Based on the regression model and on the spectral characteristic parameter SDr, the chlorophyll content was predicted to be high.

  Quality Analysis and Grading Standards of Cooked Salted Duck Egg Wang Zhongfeng,Rao Yinhuan,Dai Chao and Wang Yuqin 2017, 33 (17):  123-128.  DOI: 10.11924/j.issn.1000-6850.casb16080142 Abstract + ( 1273 )   PDF ( 846KB )   ( 3811 ) [Objective]To investigate the quality of cooked salted duck egg and establish a grading standard, some quality indexes of vacuum-packed cooked salted duck egg were analyzed. [Method]Samples included 6 brands from different province. [Result]The results showed that egg white contained 80.03%~82.56% water, 5.25%~10.45% salt; yolk contained 26.86%~39.53% water, 2.06%~3.22% salt, 39.81%~50.82% total fat. The oil exudation rates based on the yolk mass were 11.28%~22.26%. [Conclusion]There are great differences of salt content between samples. Also the content of water, fat and oil exudation rate vary greatly among the samples. The yolk of most samples had apparent oil exudation, but textures of the yolk were argillization or part argillization, and the integrity of the yolk disappeared. Colors of egg white were grey white or grey. Yolk colors were dark brown or seriously deteriorated. According to the analysis of the market product, the reference standard for grading of cooked salted duck egg was suggested.

  Nutritional Components in Chenopodium quinoa at Different Elevations Xu Tiancai,He Guiqing,Li Zhaoguang,Zhao Ju,Su Zechun and Xue Runguang 2017, 33 (17):  129-133.  DOI: 10.11924/j.issn.1000-6850.casb16100121 Abstract + ( 722 )   PDF ( 514KB )   ( 589 ) Abstract: The research explored the relationship between nutritional components of Chenopodium quinoa willd seeds and elevation of cultivation areas in order to provide scientific references for standard cultivation and supplying of Chenopodium quinoa willd in the northwest of Yunnan province. A field experiment was performed in four sites with varying elevations and effects of elevation on seeds of Chenopodium quinoa in terms of protein, ash content, amino acid, and trace elements were reviewed. The results showed that in Chenopodium quinoa seeds, sugar, ash content, manganese, potassium, aspartic acid, glutamic acid, valine, isoleucine, tyrosine, arginine, and amino acid contents were all going up as the elevation increased, but crude fiber, palmitic acid, α-linolenic acid, and copper contents were going down. Nutritional components of Chenopodium quinoa seeds have been closely linked to elevation of the cultivation area, and it is necessary to arrange planting work scientifically, with consideration of practical demands.

  Developmental Recommendations and Proficiency Testing Comparison of Pesticide Residue Detection for Aquatic Products at Home and Abroad 2017, 33 (17):  134-140.  DOI: 10.11924/j.issn.1000-6850.casb16080108 Abstract + ( 1157 )   PDF ( 544KB )   ( 379 ) The study aims to further promote the development and improve the capability of proficiency testing for detecting pesticide residues in aquatic products in China, enhance the mutual recognition of proficiency testing among the international agencies and domestic inter-ministries. We summarized the status of proficiency testing of the world’s leading authority agencies FAPAS and APLAC, and domestic institutions including CNCA, CNAS, ACAS and Ministry of Agriculture. Then we mainly compared assessment project, sample preparation, detection method request, and result feedback of proficiency testing between China and the international authority agencies. Aiming at the problems of proficiency testing in China, some suggestions were put forward, such as strengthening the research of new parameters, enriching the methods of sample preparation and evaluation, improving methods of result feedback and promoting technical exchange, to provide a reference for the improvement of proficiency testing for detecting pesticide residues in aquatic products.

  Shanxi Agricultural Science and Technology During the Period of the Republic of China: A Review Ren Yongling and Han Guangqian 2017, 33 (17):  141-145.  DOI: 10.11924/j.issn.1000-6850.casb17030051 Abstract + ( 707 )   PDF ( 554KB )   ( 502 ) Through the inspection and retrieval of a large number of original literatures, the history of Shanxi agricultural science and technology development during the Republic of China can be elucidated. This paper expounds the establishment of the main agricultural institutions and schools in Shanxi, and introduces the scientific and technological activities of the agricultural institutions and schools from three aspects: breeding fine varieties, promoting agricultural technology and carrying out scientific experiments. The results and limitations of the agricultural science and technology activities in Shanxi during the period of the Republic of China is summarized roughly: those kinds of agricultural improving measures employed by the Beiyang government and the local Shanxi government exerted certain effects on the dissemination of agricultural scientific and technological knowledge and the restoration of agricultural production. To pay attention to the enhancement of the research capacity during the variety introduction and to specially focus on the competitive edge of the cotton industry are similar with the present practices including strengthening basic research, enhancing innovation, developing characteristic industries and accelerating the pace of poverty relief. Stability of social environment and a correct guiding ideology is the guarantee of a successful social cause.

  Ecological Agriculture Development Planning of Lianping County in Guangdong Province Gan Yangying,Su Zhuhua,Xiao Guangjiang and Zhang Jinge 2017, 33 (17):  146-152.  DOI: 10.11924/j.issn.1000-6850.casb16100033 Abstract + ( 820 )   PDF ( 734KB )   ( 578 ) Lianping is a county located in the nine mountain area, northeast of Guangdong province. It is an upstream county of Xinfeng River and water supply resources of Dongjiang River, as well as an important ecological barrier of northern Guangdong province. Because of its mountain area location and backward economic development, Lianping was on the list of key counties for poverty alleviation and development of Guangdong province in 2015. In order to develop local agricultural economy on the basis of environment and water resources protection, the best and only way for them to choose is sustainable development. Ecological agriculture is an important part of sustainable development, and Lianping has significant advantages and unique conditions in ecological resources. In this study, the natural resources, social resources and agricultural production in recent years of Lianping county were analyzed in depth. The advantages vs disadvantages, opportunities vs challenges of the development of ecological agriculture in the county were clarified. In refer to some successful cases of ecological agricultural development at home and abroad, we have made an overall planning of ecological agricultural development for Lianping county and put forward some related policy recommendations. Our planning may provide some decision-making advices and strategic guidance for the ecological agricultural development of this county.

  Feed Grain Consumed From 1984 to 2013 in China Ran Juan and Sun Zhen 2017, 33 (17):  153-158.  DOI: 10.11924/j.issn.1000-6850.casb16060163 Abstract + ( 612 )   PDF ( 506KB )   ( 861 ) To get a sketch of the situation of the demand and supply of feed grain in China we atmpt to calculate how much feed grain was supplyed and consumed in the past years. Though there is difference between the supply and demand, the trend is increasing definitely.The issues were discussed which effect the result.Then We focused on the policies related of feed grain..Some policies are not sutible now and make the situtation worse. So the advices to policy-makers were given. Firstly,to import more meat products and put more effort on anti-smugglling;Secondly, to import feed grain (mainly corn) moderately.The tariff and quota should consider all fine feed which may replace corn.

  Incremental Benefits Distribution from the Transfer of Collective Construction Land Zhang Yating,Zhang Zhanlu and Zhao Qianyu 2017, 33 (17):  159-164.  DOI: 10.11924/j.issn.1000-6850.casb16080049 Abstract + ( 817 )   PDF ( 522KB )   ( 558 ) [Objective]Land benefits distribution is the main contend of the transfer of collective construction land, the distribution of the surplus benefits of the land is the key point of collective construction land market. [Method]This study analyze the collective construction land market and distribution of the surplus benefits’ present conditions, make clear the different allocation subjects involved in distribution are government, peasants and collective economic organizations. Through the analysis of different composition of surplus benefits, different types of ownership are determined. [Result]The results show that the absolute rent belongs to collective economic organizations and peasants. Differential rent I determined by natural geographical position should share between collective economic organizations and peasants, differential rent I determined by economic geographical location should allocate during government, peasants and collective economic organizations. Differential rent II belongs to government.