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施用猪粪农田重金属分布迁移和污染评价

Lei CHAO,Qi-xing ZHOU,Su CHEN,Shuang CUI,Li-ping REN

Liaoning Gongcheng Jishu Daxue Xuebao (Ziran Kexue Ban)/Journal of Liaoning Technical University (Natural Science Edition)（2006）

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Abstract
对5个典型的堆肥或施用猪粪尿的农田土壤重金属垂直分布进行了研究,结果显示猪粪的施用可以增加土壤中有机质的含量并使土壤pH值升高,且土壤深度的增加与pH值的升高表现为极显著正相关(P＜0.01).施用猪粪土壤中Cd和Zn在不同深度土层中呈"峰"型分布,而Cu在不同深度土层中表现为上部富集.Cu,Zn,Cd在农田土壤系统下的迁移能力如下:Cd＞Zn＞Cu.重金属的迁移是个复杂的过程,不但与土壤pH值和有机质含量有关,而且还受其他因素控制.
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Key words
Heavy metals,Pollution,Profile distribution,Swine manure,Transfer mechanism
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