中籼898产量构成及高产栽培措施研究

Study on Yield Components and High Yield Cultural Techniques of Medium Indica Rice Variety 898

对中籼 898产量构成因素的分析表明 ,4个产量构成因素对产量贡献的大小依次为有效穗、每穗总粒数、结实率、千粒重。产量 9.0t/hm2 以上的合理穗粒结构为 :有效穗 (2 85± 15 )万 /hm2 ,每穗总粒数 (16 0± 10 )粒 ,结实率 (86± 2 ) % ,千粒重 2 9.5g。并提出高产栽培措施。

The analysis on the yield components of medium indica variety 898 had been done. The results indicated that number of effective panicles was the most important factor to grain yield;the second was number of seed per panicle. The suitable structure of yield (9.0t/hm 2) was as fellow: 2.85±0.15 million effective panicles per hm 2, 160±10 spikelets per panicle, setting rate of 86±2%, and 1000-grain weight of 29.5g. And its high yield cultural techniques were present.