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研究了有机质,施用石灰和磷酸盐,以及淹水培育对红壤铝形态的影响。结果表明,用H2O2去除有机质,施用石灰和磷酸盐.以及淹水培育,使土壤pH升高,交换态铝减少,吸附态无机羟基铝增加。而施用腐在酸使土壤pH降低,交换态铝增加,有机配合态铝略有上升。其它形态铝(如与氧化铁结合态铝,层间铝和非晶态铝硅酸盐)变化不明显。说明交换态铝,吸附态无机羟基铝和有机配合态铝的活性较大,易受环境和农业措施的影响。
The effects of organic matter, lime and phosphates, and flooding on the aluminum speciation of red soil were studied. The results show that the removal of organic matter with H2O2, the application of lime and phosphate. As well as waterlogged cultivation, the soil pH increased, the exchangeable aluminum decreased, and the adsorbed inorganic aluminum hydroxides increased. However, application of humic acid reduced the soil pH, the exchangeable aluminum increased, and the organic complexed aluminum slightly increased. Other forms of aluminum, such as those associated with iron oxide, aluminum between layers, and amorphous aluminosilicates, did not change significantly. These results indicate that the exchangeable aluminum, the adsorbed inorganic aluminum hydroxyas and the organic complex aluminum are more active and susceptible to environmental and agricultural measures.