籼粳杂交稻的氮素吸收特性及其对“库”“源”特征的影响  

Effects of N Uptake on the Sink and Source of Indica Japonica F1 Hybrids in Rice

作　　者：石庆华[1] 徐益群[1] 张佩莲[1] 曾宪江[1] 钟旭华[1] 潘晓华[1] 

机构地区：[1]江西农业大学农学系

出　　处：《杂交水稻》1995年第4期19-22,共4页Hybrid Rice

摘　　要：籼粳杂交稻赣化７号的结实率低主要受制于源不足。赣化７号和汕优６３的“库”“源”特征和氮素反应有密切关系。赣化７号的“库”形成对氮素反应较“源”敏感。增加栽插密度可适当改善“库”“源”比，并对“库”“源”指标的定义进行了讨论。The insufficient Source was the main cause of the low percentage of the filled grains in indica ─japonica F1 hybrids.There was a close correlation between the N uptake and the characteristics of sink and source.The formation of sink in Genhua 7 was more sensitive to the N application than that of source.The ratio of sink to source could be improved by the change of the planting density.The definition of the in- dices of sink and source was also discussed.

关 键 词：籼粳 氮素 特征 杂交水稻 栽培 

分 类 号：S511.104[农业科学—作物学]