90年代以来,江苏省各地掀起了河蟹养殖高潮,但随着养殖规模的不断扩大和生态环境的恶化,商品蟹个体偏小、品位下降、效益下滑趋势已在很多地方露头。为解决这一问题,溧阳市1996年起实施“大规模优质河蟹生态养殖技术的研究与推广应用”项目。去年,溧阳水产良种场河蟹生态养殖面积2059亩,成蟹产量达到91971.19公斤,回捕率达45.06%,平均单 Since the 1990s, the climax of crab farming has been set off in various parts of Jiangsu Province. However, with the continuous expansion of breeding scale and the deterioration of the ecological environment, individual crabs tend to be smaller and lower in quality. The downward trend in benefits has been exposed in many places. To solve this problem, Liyang City since 1996 to implement “large-scale high-quality crab eco-farming technology research and promote the use of” project. Last year, Liyang aquatic breeding farm crab eco-breeding area of ​​2059 acres, crab production reached 91,971.19 kilograms, the recovery rate of 45.06%, the average single