按照国家相关标准,用单项污染指数法与综合污染指数法对苍南县4个主要生产基地稻田土壤及稻米进行重金属与农药残留安全性评价。结果表明:4个水稻生产基地土壤都处于清洁状态,稻米中重金属和农药残留含量均未超过国家大米质量标准。稻米中Hg、As和Cd含量分别与土壤中Hg、As和Cd含量呈显著正相关,稻米中Pb含量与土壤中Pb含量相关性不显著。 According to the relevant national standards, the safety assessment of heavy metals and pesticide residues in paddy soils and rice in four main production bases in Cangnan County was evaluated by the single pollution index method and the comprehensive pollution index method. The results showed that the soil of four rice production bases was in a clean state, and the contents of heavy metals and pesticide residues in rice did not exceed the national rice quality standards. The content of Hg, As and Cd in rice was positively correlated with the contents of Hg, As and Cd in soil, but the correlation between Pb in rice and Pb in soil was not significant.