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不同时期施用穗肥对水稻产量的影响 被引量:1

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摘要 以南粳44为材料,通过调节水稻前后期氮肥运筹,设倒4叶露尖时群体叶色褪淡,能准时施用促花肥和倒4叶露尖时,叶色不褪淡,与倒3-2叶施用促保兼顾肥两个处理,结果表明产量增加的首要途径是增加每亩有效穗数,在取得适宜穗数的基础上,倒4叶期施用促花肥,促进倒2叶和剑叶的伸长,增加每穗总粒数,进而提高产量,提高氮肥利用率。
出处 《耕作与栽培》 2009年第6期23-23,29,共2页 Tillage and Cultivation
关键词 粳稻 促花肥 产量
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