江苏省宜兴市芳桥镇位于太湖之滨,2002年在农林局水产站的指导下,建立了443亩河蟹生态养殖示范区,放养河蟹347980只,且全部采用生态养殖方式进行养殖。据调查,示范区河蟹生长情况良好,至7月底,河蟹基本完成第四次蜕壳。7月底抽样841只,总重量为64600g,平均重量为76.8g,增重率分别为 Fangqiao Town, Yixing City, Jiangsu Province, is located at the coast of Taihu Lake. Under the guidance of the Aquatic Products Station of Agriculture and Forestry Bureau in 2002, 443 acres of crab eco-farming demonstration area was set up and 347,980 crabs were stocked. All of them were cultured by means of ecological breeding. According to the survey, the crabs in the demonstration area have a good growth condition. By the end of July, the crabs have basically finished their fourth exfoliation. 841 samples by the end of July, the total weight of 64600g, the average weight of 76.8g, weight gain rates were