水稻高产的产量构成分析

摘要

通过对杂交稻特优63不同产量水平的产量构成的调查，结果明确：在闽南目前栽培条件下，每平方米穗数和每穗粒数成为决定产量的主要因素，其二者乘积的每平方米总粒数对增产的贡献率达95％以上，每667m2产量为500、600、700、800kg的每平方米总粒数分别为2．9万、3．5万、4．1万和4．7万粒。%This paper surveys yield components under the different yield level of hybrid rice ＂Teyou 63＂ , The results reveals that under the cultivation conditions in south Fujian at present, spike number per square meter and grains per spike become the main factors determining yield, the contribution rate of product of them （ the total grain number per square meter ） is more than 95% for yield. And while the yield per 667m2 are 500, 600, 700 and 800kg, the total grain number per square meter are 2.9 million, 3.5 million, 4.1 million and 4.7 million.