开封市城区拥有精养鱼塘面积933.3公顷,其中70%为集约化鲤鱼高产养殖池塘,面积近万亩,由于养殖密度高,单位水体载鱼量大,投饵量及鱼类排泄物多,残饵沉积,再加上有的养殖户不能及时清除塘底淤泥,造成底泥过厚,每到夏秋高温季节就会导致水质恶化,池水缺氧,鱼病频繁发生,给养殖户带来 Kaifeng City has an area of ​​933.3 hectares of intensive fish ponds, of which 70% are intensive carp high-yield breeding ponds covering an area of ​​nearly ten thousand mu. Due to the high density of culture, the carrying capacity of fish in the unit water body is large, The bait deposition, coupled with some farmers can not promptly remove the pond bottom mud, resulting in thick sediment, every summer and fall will lead to high temperature season, water quality, hypoxia, fish diseases occur frequently, to bring farmers