农家肥有效成分含量低,肥效迟缓。如果给农家肥酌加添加剂,不仅能防止有效成分挥发流失,还可使肥效成倍提高。一、人粪尿添加硫酸亚铁。每100千克人粪尿加硫酸亚铁500～600克,可使人粪尿中的碳酸铵转化成性质稳定的硫酸铵,具有保肥除臭,防止氮素挥发的作用。二、人粪尿添加过磷酸钙。每100千克人粪尿加入5千克磷肥,拌匀后存放3～10天,能使人粪尿中极易挥发的碳 Active ingredients of low-fat manure, fertilizer slow. If added to the farm fertilizer Additives, not only to prevent loss of volatile active ingredients, but also make fertilizer doubled. First, human waste add ferrous sulfate. Per 100 kg human excrement plus 500 ~ 600 grams of ferrous sulfate, can make human excrement of ammonium carbonate into stable ammonium sulfate, with fertilizer and deodorant to prevent the role of nitrogen volatilization. Second, human waste add superphosphate. Per 100 kg of human waste by adding 5 kg of phosphate fertilizer, mix well and store for 3 to 10 days, can make human excrement in the highly volatile carbon