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我省施用钾肥对各种作物的良好增产效果已有报道,并已在不同地区的生产实践中得到验证。但钾肥在不同轮作复种制中的不同造别施用,对当造和后造作物产生不同的增产效果,尚缺乏系统深入的研究。在我省主要的一年三熟复种制——稻、稻、麦(或稻、稻、肥)中,如何在各造作物中合理分配施用钾肥,使有限的钾肥在整个轮作复种周期中获得较高的增产效果,以充分发挥钾的增产作用,是有待研究解决的问题。我们从1979年开始进行有关试验,本文是两年来的试验结果。
The good yield increase effect of potassium fertilizer on various crops in our province has been reported and has been verified in the production practice in different regions. However, different application of potash fertilizer in different crop rotation system has different effects on production increase and post-production crop production. However, there is no systematic and in-depth study. How to allocate and utilize potash fertilizer rationally among various crops so that the limited potash fertilizer can be obtained in the whole crop rotation and seed multiplication cycle in the rice, rice, wheat (or rice, rice and fat) Higher stimulation effect, in order to give full play to potassium production, is to be studied to solve the problem. We started the trial in 1979, this article is the result of two years of testing.