无污染农产品对土壤铅环境质量标准要求的变化——个案研究 关键词：农产品；铅污染；土壤环境质量标准 [gap=1003]Key words：Agricultural products；Pb pollution；Soil environmental quality standards
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The result showed the heavy metal content in bed mud was over Soil Environmental Quality Standard Two except Pb, in which Cd pollution was the most significant.
结果表明各航道底泥中重金属除铅以外，含量均超过《土壤环境质量标准》中的二级标准，其中镉的污染最为严重。
The examples for the application of the background values to the formulation of soil environmental quality standard and the study of human health and agriculture were discussed.
讨论了土壤背景值在制定土壤环境质量标准、研究人体健康和农业方面的应用实例。
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