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我区位于珠江三角州,淡水养殖在我区国民经济中占有一定的比重。每年生产的淡水鱼除部分出口外,其余供应省内市场。由于含汞工业三废和农业上使用有机汞农药污染了水域,可能使鱼体汞含量不断增高。为监测和防止有害毒物污染塘鱼,我们于1978年9月至12月调查了我区四个县市的六种主要淡水鱼290份,现将结果报告如下。
My district is located in the Pearl River Delta, freshwater aquaculture in our region occupies a certain proportion of the national economy. The annual production of freshwater fish in addition to some exports, the rest supply the province market. As mercury-containing industrial waste and agricultural use of organic mercury pesticides polluted waters, may make the mercury content of fish increased. To monitor and prevent the pollution of pond fish by harmful toxicants, we surveyed 290 major freshwater fish species in four counties and cities in our district from September to December 1978, and the results are reported as follows.