摘要
本研究对亚有限和无限类型品种在不同密度条件下时、荚、粒重垂直分布规律进行了分析。自然状态叶片分布主要位于群体上层，亚有限结荚习性品种叶、荚、粒重垂直分布比例以上中层节位为主，无限结荚习性以中下层为主，分枝力较强的无限类型中层荚粒比例较大。密度对叶、荚、粒分布作用明显，同层次源库对应关系显著。根据不同类型品种叶、荚、粒垂直分布特点确定合理的种植密度和栽培管理措施，注意发挥主导层次生产潜能，充分发掘品种自身生产潜力，是提高大豆籽实产量有效途径。
The rate of leave, pod and grain weight of distribution under different planting densityhas been studied for semi-determinate and indeterminate soybean varieties. The vertical distribution of the leaves in natural state is mainly at the top of the plants. Leaves,pods andgrains of semi-determinate varieties are large distributed in the middle and top nodes, andthose of the indeterminate ones are the middle and bottom. The rate of pods and grains ofstrongly branching indeterminate ones is highest in the middle portion. Planting density effects on the distribution rate of leaves, pods and grains to a large extent.The relationship ofsource and sink at the same vertical position is sisnificant. It is on effective way to raise theyield of soybean by means of suitable planting density and proper management in accordancewith the characteristic of the vertical distributive rate of leaves, pods, and grains of differentsoybean varieties. Soybean yield can be promoted if the productivity potential of the most efficient vertical portion can be released.
出处
《大豆科学》
CAS
CSCD
北大核心
1995年第1期53-59,共7页
Soybean Science
基金
国家自然科学基金
关键词
大豆
垂直分布
密度
株型
Soybean
Vertical
distribution
Density
Plant type
