有关磷肥肥效问题,近年来国内已进行了不少的试验研究。就缺磷的酸性土壤来讲,几乎各种类型的磷肥(包括过磷酸钙、钙镁磷肥和磷灰石等)都有不同程度的肥效,只是增产的幅度随作物种类和农业技术措施而有所差异。在含磷量较高的石灰性及中性土壤中, Fertilizer efficiency issues in recent years, China has conducted a lot of experimental research. In the case of acidic soils lacking in phosphorus, almost all types of phosphate fertilizers (including superphosphate, calcium magnesium phosphate and apatite, etc.) have varying degrees of efficiency, except that the rate of increase depends on the crop species and agricultural techniques Differences. In calcareous and neutral soils with high phosphorus content,