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１．混养模式多年来，人们一提到混养，马上就会联想到四大家鱼的混养，似乎除此之外就没有其他更多的混养模式了。其实，科学的混养概念内容是非常丰富的，其目的在于：①充分利用有限的水体空间；②合理地安排各生物群体之间的食物链；③减少病害传播的机会；④提高综合养殖
1. The polyculture model Over the years, people referred to polyculture, immediately think of the polygamy of the four major domestic fish, it seems there is no other more polyculture mode. In fact, the concept of scientific polyculture is very rich, its purpose is: ① make full use of limited water space; ② reasonably arrange the food chain between the various biological groups; ③ reduce the chance of disease transmission; ④ improve the comprehensive breeding