空育131高产群体的产量构成和分蘖利用  

Yield Components and Tiller Utilization of High-yielding Population of Kongyu 131

作　　者：李金峰[1,2] 钱永德[3] 吕艳东[3] 李宏宇[3] 

机构地区：[1]沈阳农业大学农学院 [2]黑龙江八一农垦大学,黑龙江大庆163319 [3]黑龙江八一农垦大学

出　　处：《沈阳农业大学学报》2004年第4期308-312,共5页Journal of Shenyang Agricultural University

基　　金：国家"863"项目(2001AA241015)

摘　　要：以黑龙江省栽培面积最大的水稻品种空育131为对象,利用不同的肥密处理方式,创造结构和产量不同的群体。结果表明熏空育131产量构成要素中熏对产量直接贡献最大的是单位面积穗数熏其次是每穗粒数,8000kg·hm-2以上产量水平的穗粒结构为每平方米620～660穗和每穗60～65粒,结实率和千粒重对产量也有一定贡献。分蘖成穗率高、分蘖穗比率大的群体产量较高。Kongyu 131 cultivated widely in Heilongjiang Province, as experimental material, was treated with different fertilizers and densities forming 31 populations with different yields. The results indicated that the first factor to affect grain yield was number of panicles per unit area, and the second was spikelets per panicle. For high-yielding rice plant population, the number of panicles was 620～660 panicles per m2 and a panicle had 60～65 ripened grains. Increasing seed setting rate and 1000-grain weight could raise the grain yield. The rice plant population with more effective tillers was high-yielding.

关 键 词：水稻 空育131品种 高产群体 产量构成 分蘖特性 

分 类 号：S511[农业科学—作物学]