土壤风化程度经常与地带性土壤的磷素存在形态相关,这已为国内外的一些研究工作所证实,但对土壤不同粒级中磷形态的影响,迄今仍研究较少。在五十年代,Williams,E.G.和Saunders,W.M.H.曾测定了土壤不同粒级中的全磷、无机磷和有机磷含量,并指出在所有供试土壤中,无论是无机磷或有机磷,粘粒部分的相对含量都高 The degree of soil weathering is often correlated with the presence of phosphorus in zonal soils, which has been confirmed by some researches at home and abroad. However, the effect on the speciation of phosphorus in different fractions of soils has not been studied yet. In the 1950s, Williams, EG, and Saunders, WMH had measured total phosphorus, inorganic phosphorus and organic phosphorus in different soil fractions and pointed out that in all tested soils, either inorganic phosphorus or organic phosphorus, Part of the relative content is high