结合国内外已有研究成果,介绍了无机磷来源、形态和数量概况,综述了无机磷分级测定方法的研究进展,分析了无机磷生物有效性的影响因素,尤其施肥对无机磷剖面分布及分级的影响。在此基础上,指出目前农田土壤无机磷分级研究存在的问题,并对下一步研究进行了展望。 Based on the existing research results both at home and abroad, the sources, forms and quantities of inorganic phosphorus were introduced. The research progress of inorganic phosphorus classification was reviewed. The influencing factors of bioavailability of inorganic phosphorus were analyzed, especially the distribution and classification of inorganic phosphorus profiles Impact. On this basis, the problems existing in the classification of inorganic phosphorus in agricultural soils are pointed out, and the prospects of the next research are prospected.