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研究了溶性磷盐在红壤中的转化以及影响这种转化的因子。在试验的条件下,溶性磷盐施入红壤后,迅速向磷酸铁铝方向转化,并且温度可以加速这种转化速度。除去活性R_2O_3可以使磷的固定量减少至原先土壤的12—19%,而用人工方法将脱去R_2O_3的土壤再包上Fe_2O_3,则其固定量几接近于原始土壤。在试验条件下,同一种土壤在一定的pH 范围内,pH 似乎不至显著影响磷的存在状态。
The conversion of soluble phosphonium salts in red soil and the factors affecting the transformation were studied. Under the experimental conditions, the soluble phosphonium salt is rapidly converted to aluminum phosphate after being applied to the red earth, and the temperature can accelerate the rate of conversion. Removal of active R_2O_3 can reduce the fixed amount of phosphorus to 12-19% of the original soil, and manually remove the R_2O_3 soil and then re-Fe_2O_3, the fixed amount of several close to the original soil. Under the experimental conditions, the pH of the same soil does not appear to significantly affect the presence of phosphorus at a certain pH range.