磷酸二铵是以磷为主的氮磷复合肥,含五氧化二磷46％,含氮18％,是一种水溶性肥料,其水溶液呈中性。外观呈深灰色小颗粒,有一定的吸湿性。磷酸二铵中的氮、磷都是速效的,易被作物吸收利用。它适用于各种土壤和多种作物,特别适于需磷较多的作物和缺磷土壤,一般多作基肥和口肥。作基肥时,亩施量为25～35斤。作口肥用,亩施量为15～25斤,注 Diammonium phosphate is a phosphorus-based nitrogen and phosphorus fertilizer, containing phosphorus pentoxide 46%, 18% nitrogen, is a water-soluble fertilizer, the aqueous solution was neutral. Dark gray appearance of small particles, a certain degree of hygroscopicity. Diammonium phosphate in nitrogen, phosphorus are quick, easily absorbed by the crop. It is suitable for a variety of soils and a variety of crops, especially suitable for phosphorus-rich crops and phosphorus-deficient soil, and more for the basic and fat manure. For basal, Mushi amount of 25 to 35 pounds. For mouth fat use, Mushi amount of 15 to 25 pounds, note