过磷酸钙是世界上最早生产的磷肥品种。目前仍是我国磷肥生产中数量最多的产品。过磷酸钙是灰白色粉末或颗粒,主要成分是水溶性的磷酸一钙,有效成分含量12～18％,并含有40～50％硫酸钙(石膏)、4～5％游离酸,使得过磷酸钙呈酸性反应,稍带酸的气味,腐蚀性很强,易吸湿结块。我区随着农业生产发展,大量速效氮肥的使用,过磷酸钙也开始受到重视。但是,在生产中这种磷肥的利用率却很低,一般只有10～15％。为了充分发挥 Superphosphate is the world’s first production of phosphate fertilizer varieties. It is still the largest number of phosphate fertilizer production in China. The superphosphate is an off-white powder or granule, the main component is water-soluble monocalcium phosphate, the active ingredient is 12-18%, and contains 40-50% calcium sulfate (gypsum) and 4-5% free acid so that the superphosphate Acidic reaction, slightly acidic odor, strong corrosive, easy to moisture caking. With the development of agricultural production in our region, a large number of effective use of nitrogen fertilizer, superphosphate has also begun to receive attention. However, in the production of phosphate fertilizer utilization rate is very low, generally only 10 to 15%. In order to give full play