大豆科学2011，Vol.30Issue(1)：92-95,4.
利用15N标记确定氮素营养水平对大豆籽粒氮素构成的影响
Effects of Nitrogen Nutrition Levels on Nitrogenous Constitution of Soybean Seeds by 15N Labeling
摘要
Abstract
Labeled 15N ammonium sulfate was used as nitrogen source to study the effects of nitrogen nutrition levels on soybean (cultivar Dongnong 47 ) nitrogenous constitution and yields by sand culture. The results were shown as following: the crop yield increased at first and decreased later as the exogenous-N level heightened. When the nitrogen concentration was 50 mg · L - 1, crop yield was the highest. Heightened exogenous nitrogen level between R4 and R5 could increase yield of soybean. The regression between yield and proportion of fertilizer-N in seed, yield and proportion of nodulation-N were analyzed.The result of derivation analysis showed that highest yield could be obtained when the proportion of soil-N and nodulation-N was 39. 1％ and 61.5％ , respectively. We could deduce that when the contribution rate of exogenous nitrogen and nodulation-N was about 40％ and 60％ in seeds, respectively, these would satisfy the requirement of soybean seeds and benefit soybean yield formation.关键词
大豆/外源氮/15N标记/根瘤固氮/产量Key words
Soybean/ Exogenous-N/ 15 N labeling/ Nodulation-N/ Yield分类
农业科技引用本文复制引用
董守坤,刘丽君,张冰,马春梅,龚振平,祖伟..利用15N标记确定氮素营养水平对大豆籽粒氮素构成的影响[J].大豆科学,2011,30(1):92-95,4.基金项目
国家"十一五"科技支撑计划资助项目(2007BAD89B05) （2007BAD89B05）
黑龙江省科技攻关资助项目(GA09B103,GA09B104) （GA09B103,GA09B104）
东北农业大学科技人才启动基金资助项目(2009RC57). （2009RC57）
