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取熟化度不同的３种红壤性水稻土进行室内模拟培养，考察施磷后土壤对磷的吸附和解吸动态，同时比较了不同施磷量及不同培养温度条件下各供试红壤性水稻土对磷的吸附差异。结果表明：熟化度不同，对磷的吸附表现出随熟化度提高，吸磷比下降的明显规律，经９６ｈ培养后，初度熟化红壤水稻土吸附量高达９３％；中度熟化的为４３％；高度熟化的降低至２３．１％。被吸附固定的磷在初度和中度熟化红壤性水稻土中都很难解析出来，只有高度熟化的可解析出一部分。不同施磷浓度比较，以低浓度施磷处理的吸磷量普遍高于高浓度施磷处理，４０℃条件下培养的吸磷量明显高于２０℃条件下培养。上述磷的吸附和解吸特征随熟化度的变化主要与熟化过程中有机质含量增加，活性铁、铝含量明显下降有关。
Three kinds of red soil paddy soils with different ripening degrees were selected for indoor simulated cultivation. The dynamics of phosphorus adsorption and desorption in the soil after phosphorus application were investigated. The effects of different phosphorus fertilizers and different incubation temperatures Phosphorus adsorption differences. The results showed that: the different degrees of ripening showed that the adsorption of phosphorus showed obvious regularity with the increase of the degree of ripening and the decrease of the ratio of phosphorus uptake. After 96h cultivation, the amount of adsorption of primary paddy soil was as high as 93% The highly matured reduced to 23.1%. Adsorbed and immobilized phosphorus is difficult to resolve in both primary and moderately matured reddish paddy soils, and only partially highly-maturated ones can be resolved. Compared with different phosphorus application rates, phosphorus uptake by low phosphorus application was generally higher than that under high phosphorus application. The phosphorus uptake at 40 ℃ was significantly higher than that under 20 ℃. The above-mentioned characteristics of phosphorus adsorption and desorption were mainly related to the increase of organic matter content and the significant decrease of active iron and aluminum content in the ripening process with the change of the ripening degree.