育苗阶段不同氮浓度对烟苗部分生理生化指标的影响

摘要/Abstract

摘要： 以红花大金元烤烟品种为材料，研究了育苗阶段不同氮浓度营养液即50、150、250、350、450、550mg/kg对成苗时烟苗农艺性状、根系活力、脯氨酸含量以及移栽后30d时体内多酚氧化酶、过氧化物酶、过氧化氢酶等活性的影响。试验结果表明：(1)当氮浓度在50~450mg/kg时，成苗时烟苗的干、鲜重随之增加，而氮浓度到550mg/kg时，烟苗的干、鲜重开始减少，说明育苗烟苗营养液浓度过低、过高均不利于烟苗的干物质的积累；(2)育苗阶段不同氮浓度营养液处理烟苗的活跃吸收面积存在极显著差异，其中以150、250mg/kg的处理为最大；(3)随着氮浓度提高，移栽时烟株体内的脯氨酸含量随之下降；(4)在移栽后30d，氮浓度为150mg/kg的处理烟株体内多酚氧化酶、过氧化物酶、过氧化氢酶活性最高，且随着氮浓度的增加而随之减少，蛋白质含量则随着氮浓度的增加而增加。综合而言，育苗阶段营养液中的氮浓度为150、250mg/kg时有利于培育抗性较强的红大品种烤烟烟苗。

关键词: 西部农村, 西部农村, 人力资源, 职业教育

Abstract: The test was conducted to study the influence of the different nitrogen concentration in float system on some agronomical and physiological characters of flue-cured tobacco plant at transplanting and 30 days after transplanting respectively. The results showed that: (1) The dry matter accumulation of tobacco seedlings were improved when the nitrogen concentration was increased from 50 to 450 mg/kg in float system, while that of the seedlings treated with 550 mg/kg was decreased; (2) Nitrogen concentration in float system had great influence on root activity. Root activity of the seedlings treated with 150 or 250 mg/kg were higher than others；(3) Proline content in tobacco seedlings was decreased at the time for transplanting when the nitrogen concentration was increased in float system; (4) The activity of peroxidase, catalase and polyphenoloxidase were observed highest in plants at 30 days after transplanting which were nursed in float system with nitrogen concentration at 150 mg/kg, while those of tobacco seedlings treated with more nitrogen in nutrition solution deceased. And it was reverse for the content of protein. In a word, it could be considered that the ability of resistance of HD plant should be better if the seedlings were nursed in float system with nitrogen concentration at 150 to 250mg/kg.

中图分类号:

S432.2+2

张静,赵正雄,李宏光,丁金玲,温永琴. 育苗阶段不同氮浓度对烟苗部分生理生化指标的影响[J]. 中国农学通报, 2007, 23(7): 366-366.

Zhang Jing, Zhao Zhengxiong,Li Hongguang ,Ding Jinling, Wen Yongqin. Influence of the Different Nitrogen Concentration in Float System on Some Physiological Characters of Flue-cured Tobacco[J]. Chinese Agricultural Science Bulletin, 2007, 23(7): 366-366.

参考文献

[1] 王生荣,朱克恭.植物系统获得抗病研究进展[J].中国生态农业学报,2002,10(2):32-35.
[2] 刘雅婷.烟草青枯病的研究进展[J].云南农业大学学报,2001,(1):13.
[3] 史国安,康业斌,郭香凤.黑胚对小麦幼芽某些生理生化代谢的影响[J].麦类作物学报,2000,20(3):50-53.
[4] 陈利锋,宁玉立,徐雍皋.抗感赤霉素病小麦品种超氧化物歧化酶和过氧化氢酶的活性比较[J].植物病理学报,1997,27(3):309-312.
[5] 宋凤鸣,郑重,葛秀春.活性氧及膜脂过氧化在植物－病原物互作中的作用[J].植物生理学通讯,1996,32(5):377-385.
[6] 叶尚红,张志明,陈疏影.植物生理生化实验教材[M].云南科技出版社, 2003:104-106,161-163,135-137,157-159.
[7] 朱广廉,钟诲文,张爱琴.植物生理生化学实验[M].北京:北京大学出版社,1990:69-71.
[8] 汤章城.现代植物生理学指南[M].北京:科技出版社,1999:42-54.
[9] 李进平,陈振国,杨艳华,蔡寒玉.烤烟生长适应的土壤水分指标研究[J].烟草农业科学,2006,(2):146.
[10] Lozovaya V V, Li S, et al. Biochemical response of soybean roots to Fusarium solani F. sp. glycines infection [J]. CropSci., 2004,44(3):819-826.
[11] Wurms K V, George M P, LaureN D R. Involvement of phenolic compounds in host resistance againt Botrytis cinerea in leaves of the two commercially important kiwifruit cultivars[J]. New Zealand J.of Crop and Hort,Sci.,2003,31(3):221-233.
[12] 刘晓燕,何萍,金继运.钾在植物抗病性中的作用及机理的研究进展[J].植物营养与肥料学报,2006,12(3):445-450.
[13] Nicholson R L.Phenolic compounds and their role in disease resistance[J]. Annual Review of Phytopathology,1992,30:369-389.
[14] Wedge D E , DayaN F E, Meazza G. ANtifungal activity of Naturally occurring quinines[J]. Phytopathology,2002,92(6 Suppl.):85-86.
[15] 傅雪琳,张志胜,向平.60Co-γ射线辐射对墨兰根状茎生长和分化的效应研究[J].核农学报,2000,14(6):333-336.
[16] 曹志洪,周秀如,王恩沛.我国烟叶含钾状况及其与植烟土壤环境条件的关系[J].中国烟草科学,1990,3:6-13.
[17] 赵刚,王凤龙.我国烟草主要病害的综合防治综述[J].中国烟草科学,1999,4:5-8.
[18] S N Hawks Jretal . PriNciplesofflue-cured tobacco productioN [M].N.C.State UNiversity,USA.1983,4:66-67.
[19] 胡国松,郑伟,王震东.烤烟营养原理[M].北京:科学出版社,2000:43.