湖南地处长江中游，淡水水面积全国排名第四，即水资源丰富，水域环境条件优越，气候适宜，是我国水产品增养殖的重要基地。但在河蟹养殖业一直没有发展起来，主要原因是自身没有蟹种培育基地，无法解决蟹种来源问题。每年都需要到沿海各省去购进蟹种，这不仅要耗费大量的精力 Located in the middle reaches of the Yangtze River, Hunan is ranked as the fourth largest freshwater area in the country. It has rich water resources, superior water environment conditions and suitable climate. It is an important base for aquaculture in our country. However, crab farming industry has not been developed, the main reason is that there is no crab cultivation base, can not solve the problem of crab sources. Every year, it is necessary to purchase crab species from the coastal provinces, which not only consumes a lot of energy