在同一池塘中、同一养殖周期内放养几种不同鱼种和不同规格的鱼,称为鱼类的混养。多种鱼类的混养,是我国池塘养鱼的特色。采用池塘多鱼种混养可以立体利用水体空间,充分利用不同鱼种之间的互相促进作用,达到有效提高单位产量的目的。实践证明,根据鱼类的生活习性、食性和坑塘类 In the same pond, several different species of fish and different sizes of fish are stocked in the same breeding cycle, called fish polyculture. A variety of fish polyculture, is our pond fish farming characteristics. Pond multi-species polyculture can be three-dimensional use of water space, take full advantage of the interaction between different species to achieve the purpose of an effective increase in unit output. Practice has proved that, according to the fish’s habits, diet and pit ponds