近年来，贝类养殖迅猛发展，但由于养殖品种单一，加上盲目扩大养殖规模，一些弊端逐渐暴露出来：产品规格减小，产量下降，病害增加，死亡率上升，养殖效益逐年下降。为改善这一状况，山东省莱州市金城镇海湾扇贝研究所从改善海区生态环境、维持生态平衡的目的出发，经过3年的 In recent years, the rapid development of shellfish farming, but due to a single breeding species, combined with blindly expanding the scale of farming, some drawbacks gradually exposed: reduced product specifications, production decline, disease increased, mortality increased, farming benefits declined year by year. In order to improve this situation, the Gulf Scallop Institute of Jincheng Town, Laizhou City, Shandong Province, started from improving the ecological environment in the sea area and maintaining the ecological balance. After three years