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以热带亚热带土壤为研究对象，用连续分级浸提法探讨了土壤中锰赋存形态与ｐＨ值的关系。结果表明：土壤中的锰处于一种动态平衡状态，各形态锰的含量及其占全锰的比例随ｐＨ的变化而变化，其中代换态锰和有机态锰随ｐＨ值升高而减少，氧化态锰、无定形铁结合态锰和晶形铁结合态锰则随ｐＨ值升高而增加，土壤中锰的生物有效性则随ｐＨ值升高而降低。
Taking the tropical and subtropical soils as the research object, the relationship between the species of manganese in the soil and the pH value was explored by continuous grading method. The results showed that manganese in soil was in a state of dynamic equilibrium. The content of manganese and the proportion of total manganese in the soil varied with the change of pH. The substituted manganese and organic manganese decreased with the increase of pH, Oxidized manganese, amorphous iron bound manganese and crystalline iron bound manganese increased with increasing pH, and the bioavailability of manganese in the soil decreased with increasing pH.