首页|期刊导航|中国农业科学(英文版)|Effects of Delayed Nitrogen Topdressing on Grain Yield and Photosynthetic Characteristics of Flag Leaves of Wheat
中国农业科学(英文版)2003，Vol.2Issue(3)：351-354,4.
Effects of Delayed Nitrogen Topdressing on Grain Yield and Photosynthetic Characteristics of Flag Leaves of Wheat
Effects of Delayed Nitrogen Topdressing on Grain Yield and Photosynthetic Characteristics of Flag Leaves of Wheat
摘要
Abstract
Four wheat cultivars were used to study the effects of delayed nitrogen topdressing on popula-tion structure, grain yield and photosynthetic characteristics of flag leaves under high-yielding conditions. Theresults showed that the nitrogen topdressing delayed from overwintering-turning green stage (N1) to turninggreen-jointing stage(N2 ) and jointing-booting stage(N3 ) decreased ineffective tiller in spring, retarded the de-cline of green leaf area and chlorophyll content in late life span, promoted photosynthetic ability of flag leavesand significantly increased the grain yield. N3 treatment was suitable for most wheat cultivars except the geno-types with higher single spike productivity and less ears in unit area.关键词
Wheat/Delayed nitrogen topdressing/Grain yield/Photosynthetic characteristicsKey words
Wheat/Delayed nitrogen topdressing/Grain yield/Photosynthetic characteristics分类
农业科技引用本文复制引用
TIAN Ji-chun,CHEN Jian-sheng,WANG Yan-xun,ZHANG Yong-xiang..Effects of Delayed Nitrogen Topdressing on Grain Yield and Photosynthetic Characteristics of Flag Leaves of Wheat[J].中国农业科学(英文版),2003,2(3):351-354,4.基金项目
This project was funded by the National NaturalScience Foundation of China (39770445). （39770445）
