传统的方法已存人粪尿．肥分往往易挥发损失，科学贮存不仅可以有效地防止肥分的挥发损失，而且还能提高肥效。下面介绍几种简便的保氮贮存法．掺加过磷酸钙。人粪尿中加入了过磷酸钙后，经化学反应，能使人粪尿中极易挥发的碳酸铵转化生成性质稳定的磷酸铵，起到保氮作用，而? The traditional method has been stored human excrement. Fertilizer is often volatile loss, scientific storage can not only effectively prevent the volatile loss of fertilizer, but also improve fertilizer efficiency. Here are some simple methods of nitrogen storage. Addition of superphosphate. Human urine added after the superphosphate, the chemical reaction can make very volatile man-made urine ammonium carbonate into stable ammonium phosphate, play a role in nitrogen retention, and?