近年来，水产品由“卖方市场”转向“买方市场”，价格不断下跌，造成养殖效益下降，甚至亏损。为了探索新的水产养殖模式。江苏省盐都县水产技术推广站工程师戴春明，根据水产生物学、生态学原理，采取模拟自然生态环境条件，进行鱼、虾、蟹、鳝、鳅等多品种混养试验，达到地 In recent years, aquatic products have shifted from the “seller’s market” to the “buyer’s market” and prices have been declining, resulting in a decrease in the profitability of aquaculture or even a loss. In order to explore the new aquaculture model. According to aquatic biology and ecology principles, Dai Chunming, an engineer in the promotion of aquatic products in Yandu County, Jiangsu Province, adopted a multi-species polyculture experiment to simulate the natural ecological environment and fish, shrimp, crab, eel and loach