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安徽省宣城市南漪湖面积32万亩,是皖东南最大的湖泊,水面宽阔,水质清新,底质多为砂粒层,湖内水草丰盛,底栖生物密度大。近年来,笔者在南漪湖实施围网养蟹项目,建成标准化围网养殖示范区5.5万亩,同时积极推广生态健康养殖技术,采取多项措施使河蟹产量和品质得到大大提升,养成的河蟹青壳、白肚、金爪、黄毛,平均规格在体重150g/只以上,回捕率70%以上,养殖经济效益十分显著。
Xuancheng City, Anhui Province, Nan Yi Lake covers an area of 320000 acres, is the largest lake in southeastern Anhui, the water is wide, fresh water, the substrate for the sand layer, rich in aquatic plants, benthic organisms density. In recent years, the author implemented the project of netting crabs in Nanyi Lake and built 55,000 mu of standardized seine breeding demonstration area. At the same time, it actively promoted eco-healthy farming techniques and adopted various measures to greatly enhance the yield and quality of crabs Crab green shell, white belly, golden claws, yellow hair, the average size of more than 150g / only, the recovery rate of 70% or more, the economic benefits of breeding is very significant.