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采用盆栽土培试验 ,研究了施用工业污泥对棉花产量及土壤中重金属污染的影响。结果表明 :工业污泥的施用有降低棉花生物产量和经济产量的趋势 ,该污泥的施用能增加土壤中重金属的含量 ,特别是Pb、Cd的含量 ,而且主要是以非交换态的形式增加 ;但土壤中总的重金属含量并没有超过国家所规定的一级土壤使用标准。
Pot experiment was conducted to study the effect of industrial sludge on cotton yield and heavy metal pollution in soil. The results showed that the application of industrial sludge could reduce the biological yield and economic yield of cotton. The application of sludge could increase the contents of heavy metals, especially Pb and Cd in soil, and mainly increase in non-exchangeable form However, the total content of heavy metals in soils did not exceed the first-level soil use standards stipulated by the state.