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大量科学实验和生产实践说明,水稻的氮肥深施,可以显著地提高肥效,这是因为铵态氮肥深施到淹水土壤的还原层,抑制了硝酸态氮的生成,从而减少了反硝化的脱氮作用所造成的氮素损失。我们在西昌县调查了解到很多社队,不注意施肥技术,普遍采用施面肥(化肥表施)。为了改变当地习用的不合理施肥方法,我们在大田进行了以氮肥深施为基础的示范性试验,现将试验的结果。初步整理报告如下。
A large number of scientific experiments and production practices show that deep application of nitrogen fertilizer in rice can significantly improve fertilizer efficiency because ammonium nitrogen fertilizer is applied to the reducing layer of flooded soil deeply and inhibits the formation of nitrate nitrogen to reduce denitrification Nitrogen loss caused by denitrification. We learned a lot of communes and communes in Xichang County Investigation, do not pay attention to fertilization technology, commonly used fertilizer (fertilizer table Shi). In order to change the irrational local fertilization methods, we carried out in the field of deep-fertilized nitrogen-based demonstration test, the results of the test. Preliminary report is as follows.