Cd, As and Hg accumulate in the soil depth of 0 20 cm with the increases of the planting number of years, which was related to sewage irrigation.

  • 结果表明,随着垦殖年限的增加,Cd、As、Hg元素大量富集在0~20cm土壤中,其原因与污水泡田相关;

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