浅水型的草型湖泊是河蟹生长的理想环境场所,为了充分发挥草型湖泊的作用,从1988年开始进行围网养蟹的探讨,发现养殖河蟹的经济效益远远大于养殖普通鱼类,大规格河蟹的养成其经济效益尤为突出。自1997年有计划地投放长江蟹种以来,连年均获得大规格河蟹的丰收。雄蟹的大部分个体 In order to give full play to the role of grass lakes, shallow lakes and grass lakes are the ideal environment for the growth of crabs. Since 1988, it has been found that the economic benefits of raising crabs are much larger than that of ordinary fish and large Species crabs to develop its economic efficiency is particularly prominent. Since 1997, the planned delivery of crabs from the Yangtze River has been the success of large-scale crab harvests in successive years. Most of male crabs