大豆科学2011，Vol.30Issue(3)：424-427,4.
施氮对高产大豆结实性垂直分布的影响
Nitrogen Effects Vertical Distribution of Yield Components of High-yield Soybean
摘要
Abstract
Research on the effects of N applications on vertical distribution of soybean [ Glycine max( L. ) Merr. ] yield components is limited. Field trials were conducted to determine the effect of N application rate on pods, seeds and cavities number on main stem of soybean, with semi-determinate soybean‘ Jiyu60’ as material. Nitrogen was applied to the soil with 0, 60, 120 and 180 kg · ha-1 at flowering, respectively. Application of N increased pods, seeds and cavities number at any rate and node position. Appropriate N ( 120 kg · ha - 1 ) significantly increased pods and seeds in 15 - 19,10 - 14, 5 - 9 nodes of main stem, and increased seed yield by 22％ compared with control. The cavities number on different part of stem were lower (5 -9 node) ＞ middle( 10 - 14) ＞ upper section( 15 - 19 node) , application of N had less influence on the distribution of empty pod cavities and had no influence on total seed-setting rate. Nitrogen increased stem diameter of basal node and internode length between 5th and 19th node. Appropriate N enhanced the pod-setting ability of upper section of soybean population,hence, increased total number of cavities and seeds number.关键词
大豆/施氮量/荚/粒/垂直分布Key words
Soybean/ Nitrogen rate/ Pod/ Seed/ Vertical distribution分类
农业科技引用本文复制引用
章建新,沈融,李宏琪,邵长贺,苏广禄..施氮对高产大豆结实性垂直分布的影响[J].大豆科学,2011,30(3):424-427,4.基金项目
国家自然科学基金资助项目(31060179). （31060179）
