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砂姜黑土及其有机无机复合体中有机磷主要集中分布在<5μm粒级的有机无机复合体中,其含量随着土壤肥力水平的提高而增加,在有机磷中以中等活性有机磷(MAOP)和中等稳定性有机磷(MSOP)为主,两者之和占有机磷总量的83~95%,土壤有机磷以及其中的活性有机磷、中等活性有机磷均与有效磷存在着极显著的正相关,并且各种形态的有机磷是可以相互转化的。
The organic phosphorus in the lime-black soil and its organic-inorganic complex mainly concentrated in the organic-inorganic complex with the size of <5μm, and its content increased with the increase of the soil fertility. In the organic phosphorus, the organic active phosphorus ) And moderately stable organic phosphorus (MSOP), accounting for 83-95% of the total organic phosphorus. The content of soil organic phosphorus, active organic phosphorus and moderately active organic phosphorus both were significantly higher than that of available phosphorus Of the positive correlation, and various forms of organic phosphorus can be transformed into each other.