摘要
通过对 1999～ 2 0 0 0年安徽省中籼区试资料的相关及通径分析得出 :每穗总粒数在两年的试验中与产量的直接相关系数均为正值。每穗总粒数、结实率与产量的直接通径系数两年均较高。选育穗型较大的重穗型组合有助于提高产量。但同时还应该注意穗、粒重之间的相互协调。其单产 10 .0t/hm2 的产量结构是 :在栽插 6 0～ 6 6万基本苗的条件下 ,控制最高苗数达 36 0～ 4 0 0万 ,使有效穗达 2 30～ 2 6 0万 ,每穗总粒数 16 0～ 2 0 0粒 ,结实率 80 %以上 ,千粒重 2 7～ 2 9g。
By analyzing the experimental data from Anhui province regional test in 1999 and 2000 with the coefficient of the correction and path analysis, the result indicated that the spikelets number of per panicle (SNPP) were positive correction with the grain yield in all these two years. The path coefficient of the SNPP and the rate of seed setting (SSR) were higher. Breeding the combinations with the larger panicles of weight-panicle will do some helps to improve the grain yield. But, at the same time, the correspondence of the panicle and the grain weight should be attached attention. The grain yield structure of the 10.0t/hm 2 should be: effective panicles number (EPN) 2.3～2.6 million, SNPP160～200, SSR>80%,weight of 1000 grains 27～ 29g, Basic seeding 600～660 thousand and maxium tillers number<3.6～4.0 million.
出处
《中国农学通报》
CSCD
2001年第5期52-54,60,共4页
Chinese Agricultural Science Bulletin
关键词
杂交中籼
高产育种
关键因素
籼稻
Medium indica hybrid rice\ High yield breeding\ Key element
