目前,国内大多数的工厂化养殖工艺比较简单,养殖过程中的大量残饵和鱼类排泄物在微生物的作用下会产生氨态氮、亚硝酸盐等有害物质,导致水质败坏,诱发鱼病,增加了鱼类发病率和死亡率,降低了养殖效益。大多数厂家通过加大换水量来解决高密度集约化养殖带来的水质容易败坏的问题, At present, most of the domestic factory farming process is relatively simple, a large number of breeding bait and fish excrement in the role of microorganisms will produce ammonia nitrogen, nitrite and other harmful substances, leading to water quality deterioration, induced fish disease , Increasing the morbidity and mortality of fish and reducing the breeding benefits. Most manufacturers to solve the problem of water quality easily brought by high-density intensive farming by increasing water exchange,