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16个土壤剖面的 77个土样的铜素含量及剖面与形态特征研究表明 ,果园由于长期大量使用含铜农药波尔多液等 ,表层土壤全铜含量明显高于对照 ,超过土壤环境质量规定的二级标准 ;果园土壤中的交换态铜、有机态铜和沉淀态铜的分配系数比对照土壤明显增加 ;随着剖面层次的加深 ,各形态的铜含量逐渐降低 ,与对照土壤的差别逐渐减少 ,说明外源铜主要对表层和亚表层土壤产生深刻影响
The copper content, profile and morphological characteristics of 77 soil samples from 16 soil profiles show that the total copper content of the surface soil is significantly higher than that of the control due to long-term extensive use of Bordeaux mixture containing copper-containing pesticides, The distribution coefficient of exchangeable copper, organic copper and precipitated copper in orchard soil increased apparently compared with the control soil. With the deepening of the profile, the content of copper in each form decreased gradually and the difference with the control soil gradually decreased, It shows that exogenous copper has a profound impact on the surface and sub-surface soil