济宁南部优质大米产地土壤地球化学特征

Geochemical Charactersitcis of Soil in High-quality Rice Production in Southern Jining City

对济宁南部优质大米产地的不同层位土壤样品的分析结果进行统计,分析了土壤元素的分布特征,证实除P的含量稍低于山东省平均值外,其他元素含量均高于山东省平均值,土壤质量良好,营养水平较高。但Cu,F,As,Cd,Pb,Hg,Cr在土壤中原始含量偏高,是潜在污染源和引发地方病的隐患。通过土壤环境质量评价和土壤肥力评价,结果表明该区土壤环境质量较好,大部分地区肥力优良或尚可,但个别地段因重金属污染超标成为质量较差区,应引起人们的重视,以确保粮食生产安全。

On the basis of statistics soil sample analysis results of samples gained from high quality ot rice production in different layers in southern Jining city, analyzing distribution characteristics of soil elements, it is confirmed that in addition to the content of P is slightly below the average value, the contents of other elements are all higher than the average value in Shandong province. Soil quality is good with higher nutritional levels. However, the origi- na content of Cu, F, As, Cd, Pb, Hg and Cr are slightly higher, which is potential sources of pollution and leads to endemic problems. Through quality evaluation of soil environment and soil fertility, soil environmental quality is good in most areas, and soil fertility is good or normal. But individual areas are poor quality areas due to excessive heavy metal contamination. It should be paid more attention to ensure safe food production.