碳酸氢铵是一种速效氮肥,含氮量17％左右。碳酸氢铵在土壤中能分解成氨和二氧化碳,既可以为作物提供氮素营养,又能为庄稼光合作用提供一部分二氧化碳。长期施用碳酸氢铵,不会在土壤中残留有害物质,不必担心土壤变酸或变碱。但是,碳酸氢铵也有一个严重的缺点,那就是很容易分解挥发,即使在常温下,也有少量碳酸氢铵分解。在追肥时,如果把碳酸氢铵撒在田面上或施得很浅, Ammonium bicarbonate is a quick-acting nitrogen fertilizer with a nitrogen content of about 17%. Ammonium bicarbonate decomposes into ammonia and carbon dioxide in the soil, providing both nitrogen nutrition for the crop and part of the carbon dioxide for crop photosynthesis. Long-term use of ammonium bicarbonate, will not remain in the soil harmful substances, do not have to worry about soil sour or alkali. However, ammonium bicarbonate also has a serious disadvantage that it is easily decomposed and volatilized, and a small amount of ammonium bicarbonate decomposes even at normal temperatures. In the top dressing, if the ammonium bicarbonate sprinkled on the field or very shallow,