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结合GPS采用网格法,对鲁西粮食主产区-聊城市耕地进行了136个样点13种微量元素的测定。分别进行了不同土壤类型的微量元素的富集指数计算,并将各微量元素与土壤理化性质之间、各微量元素之间进行了相关性分析。结果表明:聊城市土壤微量元素富集程度从大到小依次为:Cu>Hg>V>F>Zn>Ni>Cr>Co>As>Mn>Pb>Se>Cd。除Cd、Pb外,土壤微量元素的富集程度依土壤类型而异。壤质粘土对大多数元素具有极强的富集能力,壤质砂土最差。经相关性分析可知,微量元素的富集与土壤有机质相关,而与pH值无关。聊城市耕地土壤存在复合污染,但污染程度不高。
Combined with GPS grid method, the determination of 13 trace elements in 136 sample plots of cultivated land in Liaocheng, the main grain producing area of Luxi City, was carried out. The enrichment index of trace elements in different soil types were calculated, and the correlations between trace elements and soil physical and chemical properties and trace elements were analyzed. The results showed that the enrichment degree of trace elements in soils from Liaocheng city was: Cu> Hg> V> F> Zn> Ni> Cr> Co> As> Mn> Pb> Se> Cd. In addition to Cd and Pb, the enrichment of soil trace elements varies with soil types. Loamy clay is extremely enriched for most elements and loamy sand is the worst. Correlation analysis shows that trace element enrichment is related to soil organic matter, but has nothing to do with pH value. Liaocheng cultivated soil compound pollution, but pollution is not high.