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脱氮作用是水稻土氮素消失的主要机制之一。在土壤中由于生物氧化作用所形成的硝酸盐遇到水淹即便脱氮。此外,硝酸盐在土壤中流动也容易通过渗漏而消失。防止硝酸铵的硝化作用是减少硝酸盐损失的一种办法。目前已有一些氮素硝化
Nitrogen removal is one of the main mechanisms of nitrogen loss in paddy soil. Nitrates formed in the soil due to bio-oxidation are denuded even when they encounter flooding. In addition, nitrate flow in the soil is also easy to disappear by leakage. Preventing nitrification of ammonium nitrate is one way to reduce nitrate losses. There are already some nitrogen nitrification