尿素在土壤中,受微生物影响,靠尿素分解酶的作用,转化成氨态氮素,称氨化作用。可用下式简单表示: 一式:(NH_2)_2CO+2H_2O→(NH_4)_2CO_3二式:(NH_2)_2CO+2H_2O+H_2CO_3→2NH_4HCO_3 土壤中碳酸少时,主要转化成碳酸铵(如一式),碳酸多时,主要转化成碳酸氢铵(如二式)。使尿素氨化的微生物种类较多,不只是 Urea in the soil, affected by microorganisms, by the role of urea decomposition enzyme, into ammonia nitrogen, known as ammoniation. (NH 2) 2 CO 2 2H 2 O → (NH 4) _ 2 CO_ 3 di (NH 2) 2 CO + 2H 2 O + H 2 CO 3 → 2NH 4 HCO 3 The carbonates in the soil are mainly converted into ammonium carbonate (as one type) The main conversion into ammonium bicarbonate (such as two). There are more types of microorganisms that make ammonia ammoniated, not only