水稻抽穗期叶型特性及其与产量因子关系的研究

Study on the Relationship between Rice Leaf In Heading Stage and Yield Component

分析了10份水稻品种抽穗期的叶型特性及其与产量构成因子的关系,结果表明:(1)不同水稻品种叶片长度和宽度之间差异较大;(2)不同水稻品种之间叶片角度的差异明显;(3)随着施氮浓度的增加叶角有所增加,叶长先增后减,叶宽也随之增加;(4)结实率与叶角之间呈线性正相关,千粒重和每穗颖花数与叶角之间呈线性负相关;(5)千粒重和叶长之间呈线性正相关,结实率和每穗颖花数与叶长之间呈线性负相关。

Abstract： Using ten rice varieties, the characters of leaf type and yield component in heading stage were investigated, and the relationship between them were analyzed： （1） The leaf length and leaf width were different in ten rice varieties; （2） The leaf angle was discrepant in ten rice varieties; （3）With the N concentration supplied increasing, the leaf angle and leaf width increased, and leaf length increased first then decreased; （4）The relationship between seed setting rate and leaf angle was positive correlations, and the relationships between grain weight and leaf angle and grains per spike and leaf angle were negative correlations; （5）The relationship between grain weight and leaf length was positive correlations, and the relationships between seed setting rate and leaf length and grains per spike and leaf length were negative correlations.