Effect of organic materials on pH, Fe-dissolution and adsorption and desorption behaviors of Cu (II) in three soils after one dry-wet cycle were studied. Hie results showed that the pH of soils treated with organic material increased and increased with the addition of organic materials. Compared to the control, the pH of these soils were increased by 1. 55, 0. 8 and 1.33 units respectively which incorporation of organic material. The content of amorphous iron oxides increased in red soil and latosol, while the effect of organic materials on paddy soil was small. However, the adsorption of Cu (II) was increased by 6. 7, 10. 3 and 3.6 mmol/kg respectively in these soils which incorporation of organic material when the equilibrium concentration of Cu (II) was 0.2 mmol/L.%研究了添加有机物料对水稻土、红壤和砖红壤在干湿交替一次以后土壤pH、铁的形态和对铜吸附解吸行为的影响.结果表明,添加有机物料使得土壤pH升高,且随着有机物料加入量的增加而升高.与对照相比,添加有机物料可使水稻土、红壤和砖红壤的pH分别上升1.55、0.8和1.33个pH单位.红壤和砖红壤中无定形氧化铁含量增加,而水稻土中变化不大.在铜的平衡浓度为0.2 mmol/L时,添加有机物料培养可使水稻土、红壤和砖红壤铜的吸附量分别增加6.7、10.3和3.6 mmol/kg.
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