我市地处粤北山区,工矿较多,工业废水在部分的县、区严重污染农田的灌溉水质,加上农药、化肥的施用量增加,使农田和作物造成严重污染,给人、畜和农田有益生物遭受危害。为了减轻污染,保护农田生态环境,1984年,我们根据一些县、区农户早有稻田养鱼的 The city is located in northern Guangdong mountainous area, more industrial and mining, industrial wastewater in some counties, districts seriously polluted farmland irrigation water quality, coupled with pesticides, fertilizers increased the amount of application, so that farmland and crops caused serious pollution to people, livestock and Farmland beneficial organisms are endangered. In order to reduce pollution and protect the ecological environment of farmland, in 1984, according to some farms in some counties and districts, farmer fish farms