作物研究Issue(1)：26-31,36,7.DOI:10.3969/j.issn.1001-5280.2015.01.07
不同氮素形态及配比营养液对烟苗生长及生理特性的影响
Effects of Nutrient SoIution with D ifferent Nitrogen Forms and Ratio on Growth and PhysioIogicaI Properties of Tobacco SeedIings
摘要
Abstract
In order to optimize the floating system nutrient solution for growing areas of burnt-sweetness type tobacco in Hunan province under low temperature and little sunshine,effects of different nitrogen forms,concentrations and proportions of different types of ammonium salts to nitric nitrogen on growth and physiological characteristics of tobacco seedlings were studied with Yunyan 87 as material. The results indicated that treatment of nutrient solution with 1 00%NO3--N was ad-vantageous to roots elongation and chlorophyll synthesis,while its blade,stem girth,root activity and nitrate reductase activ-ity of tobacco seedlings were worse than those of treatment of nutrient solution with 50%NO3--N +50%NH4--N. The agronomic traits and physiological index of tobacco seedlings in treatment of N concentration of 500 mg/L or 700 mg/L were better than those in others treatment. The agronomic traits,chlorophyll content,roots activity and NAR activity in treatment of mixed ligand nutrient solution with ammonium hydrogenphosphate and NO3--N were better than those of nu-trient solution with ammonium nitrate,and the optimal ratio of NO3--N and NH4--N was 1∶1 .关键词
烤烟/漂浮育苗/营养液/氮素/生理特性Key words
flue-cured tobacco/floating-seedling system/nutrient solution/nitrogen/physiological properties分类
农业科技引用本文复制引用
董宝珠,李宏光,杨红武,杨虹琦,樊士军..不同氮素形态及配比营养液对烟苗生长及生理特性的影响[J].作物研究,2015,(1):26-31,36,7.基金项目
湖南省烟草公司科技项目（11－14Aa01，2013NK3073）。 （）
