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 SONK AND SOURCE OF INDICA-JAPONICA F _1 HYBRID RICE

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

机构地区：[1]江西农业大学农学系

出　　处：《江西农业大学学报》1994年第4期333-339,共7页Acta Agriculturae Universitatis Jiangxiensis

摘　　要：籼粳杂交稻赣化７号的源不足是其结实率低的主要原因。氮素吸收特性与库、源特征有关。赣化７号的库形成对氮素较敏感，而汕优６３的源形成对氮素较敏感。栽插密度和施氮量均可改变供试组合的库源比。The insufficient source is the major cause of the low percentage of the filled grains in In-dica- aponica F_1 hybrid.There is a close correlation between the N uptake and the character-istics of sink and source. The formation of sink in Guahua 7 is more sensitive to the N appli-cation than the formation of its source.The ratio of sink/source could be improved by thechange of the planting density and N application. The definition of the index of sink andsource is alsodiscussed.

关 键 词：水稻 杂交稻 氮 库源特征 籼稻 粳稻 

分 类 号：S511.203.5[农业科学—作物学]