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在毛主席革命路线指引下,我省化肥生产有很大发展。如何合理地使用化学肥料,是当前必须研究解决的一个问题。氮肥损失的途径据研究,硫酸铵、尿素等肥料,采用撒施的方法,水稻只吸收利用百分之三十至四十。早作物的吸收利用率却达到百分之五十至六十。造成氮肥损失的原因:一种是反硝化作用,把硝酸态氮还原成游离氮,引起挥发损失;另一种是施于土壤表面的碳酸氢铵、氨水等,极易分解成氨而散失。高温高湿分解挥发更
Under the guidance of Chairman Mao’s revolutionary line, great progress has been made in fertilizer production in our province. How to use chemical fertilizers reasonably is a problem that must be studied and solved now. Pathways of nitrogen loss According to research, ammonium sulfate, urea and other fertilizers, using the method of spreading, rice absorption and utilization only thirty percent to forty. Absorption and utilization rate of early crops has reached 50% to 60%. The causes of nitrogen loss: one is denitrification, the nitrate nitrogen reduction into free nitrogen, causing volatile loss; the other is applied to the surface of the soil ammonium bicarbonate, ammonia, easily broken down into ammonia and lost. High temperature and humidity decomposition volatile