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抑制氮肥发生 硝 化 的 研 究 由于氮肥可能污染水源,国外目前较注意如何抑制氮的硝化。在氮的硝化过程中,土壤微生物把固定的铵(氮肥)转化为将随水分移动的硝酸盐。用氮的硝化的抑制剂使氮肥保持铵的形式,不仅可以减少氮肥流失,还可使施加的氮为植物利用更长一些时间。此外,在秋季施加的氮肥中添加抑制剂可以减轻氮的硝化和沥滤,而在冬季沥滤期间,氮将以固定形式保持于幼苗根部。从而保证第二年春季土壤中有足够氮供植物利用。
Nitrification Nitrification Research Nitrogen fertilizer may pollute water sources, foreign countries now pay more attention to how to inhibit nitrogen nitrification. During nitrogen nitrification, soil microorganisms convert fixed ammonium (nitrogenous fertilizer) into nitrate that will move with the water. Nitrification with nitrogen nitrification inhibitors to maintain the form of ammonium nitrogen, not only can reduce the loss of nitrogen, nitrogen can also be applied to the plant for a longer period of time. In addition, the addition of inhibitors to nitrogenous fertilizer applied in the fall can reduce the nitrification and leaching of nitrogen, while during the winter leaching, the nitrogen will remain in a fixed form at the seedling root. This will ensure that enough nitrogen will be available to the plants for use in spring next year.