作　　者： ; ; ;

机构地区： 中国农业科学院中国水稻研究所

出　　处： 《浙江农业学报》 2009年第4期345-349,共5页

摘　　要： 对我国7个水稻主产省(包括江苏、浙江、安徽、四川、湖南、湖北、江西)的水稻中籼区试产量及其构成进行分析。结果表明,在产量构成3因素中,每穗实粒数对产量的直接贡献大于有效穗数和千粒重,表明每穗实粒数是提高产量的关键因子,应采取各种措施主攻大穗。生产上应提高栽插密度,通过增加基本苗来保证一定的有效穗数,在保证一定有效穗数的条件下通过增加每穗实粒数来提高水稻产量。 The yield and yield components of medium indica rice from regional trials in 7 main rice producing provinces （including Jiangsu, Zhejiang, Anhui, Sichuan, Hunan, Hubei and Jiangxi） were analyzed. The results showed that the direct contribution rate of grain number per panicle to yield was greater than that of productive panicle number per plant and 1000-grain weight, indicating the key point to improve rice yield was to promote the number of grains per panicle as far as possible. In field production, the seedling density should be increased to ensure the number of productive panicles per plant and then to promote the number of grains per panicle.

关 键 词： 水稻 产量构成 区试

领　　域： [农业科学]