碳酸氢铵是我省大量生产的化肥品种之一。它施到土壤中,铵和碳酸均可被作物吸收利用,不残留有害物质。长期施用,不会引起土壤板结。但是,碳酸氢铵是挥发性氮肥,容易分解,挥发出一种刺鼻的氨气,不但肥分挥发损失,而且会薰伤作物。如聍藏保管不好,塑料袋破裂,遇到风吹、日晒、潮湿或高温等环境,其肥分就损失得更多。为了减少碳酸氢铵的挥发和烧苗,提高肥效,可采用以下五种施用方法。一、碳酸氢铵拌土撒施。碳酸氢铵拌二倍以上干细土,随混随施,既易撒匀,又可减少氨的挥发损失,并且肥料不易沾在作物的茎叶上,可以克服碳酸氢铵易烧苗的缺点,提高肥效。二、碳酸氢铵与过磷酸钙混合使用。过磷酸钙中含有百分之四至五的游离酸,如与碳酸氢铵混合,可以中和酸性,生成稳定性较好的磷酸铵或硫酸铵。不但可以避免碳酸氢铵中氨 Ammonium bicarbonate is one of the large-scale production of fertilizer varieties in our province. It is applied to the soil, ammonium and carbonic acid can be absorbed by the crop without harmful substances. Long-term application, will not cause soil compaction. However, ammonium bicarbonate is a volatile nitrogen fertilizer, easy to decompose, volatilize a pungent ammonia, not only fat loss of volatile, but also will burn the crop. Such as Tibet possession of poor storage, plastic bags rupture, encountered wind, sun, humidity or high temperature and other environment, the loss of their fat loss even more. In order to reduce the volatilization of ammonium bicarbonate and seedlings, improve fertilizer efficiency, the following five methods can be used. First, ammonium bicarbonate mix soil spreading. Blended with ammonium bicarbonate more than twice the dry fine soil, with the mix with Shi, both easy to spread evenly, but also reduce the loss of ammonia volatilization, and fertilizer is not easy to stick to the stems and leaves of crops, can overcome the shortcomings of ammonium bicarbonate easy to burn seedlings , Improve fertilizer efficiency. Second, ammonium bicarbonate and superphosphate mixed use. SSP contains 4 to 5 percent of the free acid, such as with ammonium bicarbonate mixed, you can neutralize the acid, resulting in better stability of ammonium phosphate or ammonium sulfate. Not only can avoid ammonium bicarbonate ammonia