河蟹和小龙虾都是高效的水产养殖品种,但高效的品种没有高效的养殖技术、养殖模式相匹配,养殖效益也不能取得最佳。采用河蟹套养殖小龙虾、青虾,常年亩效益可保持在2000～3000元,苏南等地区效益能达 Crayfish and crayfish are both highly efficient aquaculture species, but highly efficient species do not have efficient farming techniques, and their breeding patterns are matched and their breeding benefits can not be optimally achieved. The use of crab sets of culture crayfish, shrimp, perennial mu benefits can be maintained at 2000 ~ 3000 yuan, the benefits of southern Jiangsu and other areas up to