在碳酸氢铵(下称普通碳铵)生产过程中,定量加入一种有机化合物DCD(下称氨稳定剂),形成共结晶型新肥种,称之为长效碳酸氢铵(下称长效碳铵)。其特点是:减缓直接挥发损失率47％;肥效期由35～45d延长到90～110d;氮素利用率提高5.9～10.2个百分点;在同等产量水平下可节肥20％～30％;在等氮量施肥条件下增产率为10％,常显示出有促进作物早熟功能。可作基肥1次施入,为免中耕、覆膜和节水农业提供了节约劳力而增产的肥料。 In the production process of ammonium bicarbonate (hereinafter referred to as common ammonium bicarbonate), an organic compound DCD (hereinafter referred to as ammonia stabilizer) is quantitatively added to form a new type of co-crystal fertilizer, which is called long-acting ammonium bicarbonate Effective ammonium bicarbonate). Its characteristics are: to reduce the direct loss rate of 47%; fertilizer period from 35 ~ 45d extended to 90 ~ 110d; nitrogen utilization increased by 5.9 to 10.2 percentage points; at the same level of yield can be 20% to 30% Nitrogen fertilization under the conditions of yield increase of 10%, often showing the role of promoting precocious crops. Can be used as a base fertilizer 1 times, in order to avoid tillage, film and water-saving agriculture to provide labor-saving and yield fertilizers.