长岛县地处黄渤海交汇处,海岸线漫长,海域辽阔,非常适合扇贝的养殖、繁育。栉孔扇贝是当地浅海筏式养殖的优势品种,但自1996年以来在养殖生产中出现很多问题,突出表现为种质严重退化、养成周期长、成活率低、抗病力差,尤其最近几年,扇贝养殖出现大面积死亡,严重影响了该产业的可持续发展。究其原因 Long Island County is located in the Yellow Sea and the Bohai Interchange, a long coastline, vast sea, very suitable scallops breeding and breeding. Chlamys farreri is the dominant species in local shallow-sea raft culture. However, many problems have emerged in aquaculture production since 1996, highlighting serious germplasm deterioration, long cycle of development, low survival rate and poor disease resistance, especially recently In a few years, large-scale death of scallop farming has seriously affected the sustainable development of the industry. The reason