一、研究目的、意义图们江是中朝两国的界河,是两国沿江地区农田灌溉的主要水源,仅我国沿江地区,用图们江水灌溉的面积就有二万四千多亩,分布在和龙县、延吉县、图们市境内二十六个大队。随着两国沿江工业生产的发展,图们江水受到了严重污染。这对两国人民的健康和工农业生产造成严重的影响。因此,我们在去年初步探讨尾矿污泥累积量对农田土壤一般 I. Purpose and Significance of the Study The Tumen River is the boundary river between China and the DPRK and the two countries. It is the main source of farmland water for irrigation in the rivers of the two countries. Only in the riverside areas of China and the PRC, there are more than 24,000 mu of land irrigated by the Tumen River. In Heilong County, Yanji County, Tumen City, twenty-six brigades. With the development of industrial production along the two countries, the Tumen River has been seriously polluted. This has a serious impact on the health of both peoples and on industrial and agricultural production. Therefore, we discussed tentatively the accumulative amount of tailings sludge on farmland soils last year