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随着农业生产的发展,当前化肥生产,特别是氮肥生产,仍然满足不了农业生产的需要.尤其应该指出:施于土壤中的氮肥,有相当大的一部分氮素并未被作物吸收利用而白白的损失了.其中很重要的一个原因是,氮肥施入田间后,被土壤硝化细菌与亚硝化细菌作用,使一部分易于被土壤吸附的氨态氮转变成不易被土壤吸附的硝态氮,一时不能被作物全部吸收而造成损失,并且还有一部分硝态氮在缺氧条件下被反硝化细菌作用变成氮气而跑掉.
With the development of agricultural production, the current production of fertilizers, especially nitrogenous fertilizer, still can not meet the needs of agricultural production.In particular, it should be pointed out that a considerable part of the nitrogen applied to soil is not absorbed by crops and is in vain Of the loss is one of the important reasons is that after the nitrogen fertilizer applied to the field, by the soil nitrifying bacteria and nitrosated bacteria, so that part of the ammonia nitrogen can easily be adsorbed by the soil into nitrate nitrogen can not be easily adsorbed by the soil, Can not be completely absorbed by crops and cause losses, and some nitrate nitrogen is denitrifying bacteria under the condition of anaerobic bacteria to turn into nitrogen and run away.