黑龙江省乌裕尔河流域土壤中某些微量元素地球化学特征

Geochemical characteristics of some soil trace elements in the Wuyuer River Basin, Heilongjiang Province

黑龙江省乌裕尔河流域是克山病和大骨节病并存的地方病高发区,根据东北黑土地1∶250000土地质量地球化学调查数据,对乌裕尔河流域土壤中B、Cu、Fe、Mn、Mo、Zn植物必须的微量营养元素全量和有效态含量分布特征进行研究,结果显示:①土壤中Mn含量丰富,Fe含量较丰富,Cu、Mo含量中等,B、Zn含量较缺乏;②表、深层土壤微量元素含量比较,除Mo稍有贫化外,其他元素均属于自然状态,未发生富集和贫化;③土壤有效Cu、Fe含量丰富,有效Mn含量较丰富,有效B、Zn含量中等,有效Mo含量缺乏;④建议在Mo缺乏的地块施用钼肥,增加土壤有效Mo的含量,提高农产品产量和质量。

The Wuyuer River basin in Heilongjiang Province is an endemic area with a high incidence of Keshan and Kashin-Beck diseases.This study investigated the distribution characteristics of the total content and available contents of the trace elements necessary for plants(i.e.,B,Cu,Fe,Mn,Mo,and Zn)in the Wuyuer River basin using the 1∶250000 land quality geochemical survey data of the black land in northeast China.The results are as follows.①The soil in the basin is highly rich in Mn,rich in Fe,moderately rich in Cu and Mo,and deficient in B and Zn.②All the trace elements have natural contents and are not rich or deficient in the surface and deep soils of the basin,except for Mo,which is slightly depleted in the soils.③The soil in the basin is highly rich in available Cu and Fe,rich in available Mn,moderately rich in available B and Zn,and deficient in available Mo.④It is recommended that Mo fertilizer should be applied in blocks deficient in Mo to increase the content of available Mo in the soil and to improve the yield and quality of agricultural products.