碳酸氨铵是我区常用的氮素化肥。施用合理,每斤碳铵可增产粮食2～3斤。但是,碳铵的氮素不够稳定,在石灰性土壤上施用存在氮素肥分损失问题。因此,了解碳铵的性质、讲究施肥技术,对提高碳铵肥效有重要意义。碳铵的氮素在常温下极易吸湿、分解成氨气挥发损失。温度越高,相对温度越大,分解的越快,挥发损失越严重。据试验,当 Ammonium carbonate is commonly used in our region nitrogen fertilizer. Application is reasonable, per kilogram of ammonium bicarbonate can increase grain 2 ~ 3 pounds. However, ammonium nitrogen is not stable enough and there is a problem of nitrogenous fertilizer loss on calcareous soil. Therefore, to understand the nature of ammonium bicarbonate, pay attention to fertilization techniques, to improve ammonium fertilizer efficiency is of great significance. Ammonium bicarbonate easily absorb moisture at room temperature, decomposed into ammonia volatilization loss. The higher the temperature, the greater the relative temperature, the faster the decomposition, the more serious loss of volatility. According to the test, when