硝酸磷肥是一种氮磷复合肥,主要成分是磷酸二钙、硝酸铵、磷酸一铵,次要成分有硝酸钙、磷酸二铵和石膏等。氮素形态包括铵态氮和硝态氮,两者各占1/2,磷素中非水溶性磷约占磷含量的1/2。硝酸磷肥在北方石灰性土壤上对多种作物都有明显的增产效果。为了探讨其在早春小拱棚西 Nitrophosphate is a nitrogen and phosphorus fertilizer, the main component is dicalcium phosphate, ammonium nitrate, monoammonium phosphate, calcium nitrate minor components, such as diammonium phosphate and gypsum. Nitrogen forms include ammonium nitrogen and nitrate nitrogen, each accounting for 1/2, phosphorus phosphorus in the water-insoluble phosphorus accounts for about 1/2. Nitric acid phosphate fertilizers have a significant effect on various crops in the calcareous soil in the north. In order to explore it in the early spring small shed West