【摘要】 本文研究了在等量氮肥条件下，由于施肥方式不同，水稻产量的差异。以基穗法效果最好，主要是有效穗数和穗实重增加而增产，其氮肥利用率也有明显提高。该方法具有生育过程的合理性、丰产性和节能性。具体施法在确定全年施氦总量的情况下，７０～７５％为全层基肥，２５～３０％为穗肥。更多还原

【Abstract】 This study revealed that under the condition of the same total quantities of N fertilizer, rice output varied with the differences of N-fertilizer applying ways. Among the ways, Base-And-Spike pattern was the best, due to this way could increase significantly effective spike numbers, seedset percentage and utilized coefficient of N-fertilizer. It could not only make rice grow properly and get a good yield, but also save energies. The Base And-Spike pattern was carried out as follows, 70～75% total applying N-fertilizer was used as base fertilizer and the other 25～30% was applied as spike fertilizer.更多还原