随着农业生产的不断发展,国内外化学氮肥的生产和用量有了相应增加,因而如何合理使用氮肥,充分提高氮肥利用率,是当前农业生产上急待解决的问题。据国外报导,农田使用氮肥,由于土壤微生物的硝化和反硝化作用不断交替进行,引起脱氮损失和淋失达25—90%。为此,探索在氮肥中添加一种硝化抑制物质(即氮肥增效剂), With the continuous development of agricultural production, the production and consumption of chemical nitrogen fertilizer both at home and abroad have increased correspondingly. Therefore, how to use nitrogen fertilizer reasonably and raise the utilization rate of nitrogen fertilizer sufficiently is an urgent problem to be solved in agricultural production. According to foreign reports, the use of nitrogen fertilizer in farmland, due to the continuous alternation of soil microbial nitrification and denitrification, caused 25-90% loss and loss of denitrification. To this end, to explore the addition of a nitrification inhibitor nitrification (ie, nitrogen synergist)