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盆栽试验结果表明 ,在外加铜 1 0 0mgkg-1和锌 1 5 0mgkg-1时 ,铜锌交互作用可提高其毒性 ,使大麦和黑麦草生物量显著减少和土壤铜锌临界限值降低。土壤γ -辐射可促进金属单一或复合污染及对照土壤上大麦和黑麦草生长而增产 ,但在外源铜污染 (1 0 0mgkg-1)时 ,植物受害、生物量显著减少。黑麦草对Cu的敏感性高于春大麦。在制定土壤金属污染标准时应考虑金属交互作用和土壤消毒作用的效应
The results of pot experiment showed that copper and zinc interaction increased the toxicity of copper and zinc at the addition of 100 mg kg-1 and 150 mg kg-1 of Zn, significantly reduced the biomass of barley and ryegrass, and decreased the critical limit of copper and zinc in soil. Soil γ - radiation can promote the single or combined pollution of metal and increase the growth of barley and ryegrass on the control soil. However, when the exogenous copper is contaminated (100 mg kg - 1), plant damage and biomass decrease significantly. The sensitivity of ryegrass to Cu is higher than that of spring barley. The effects of metal interaction and soil disinfection should be taken into account in the development of soil metal contamination standards