近几年来,河蟹养殖不断发展,养殖的效益水平已从以前的暴利进入微利状态。河蟹已进入寻常百姓的餐桌,河蟹养殖的发展虽然丰富了人们的膳食结构,但对蟹农来讲效益在下降。因此,当前蟹农的精力要放在研究如何提高河蟹养殖的经济效益上。根据目前的市场调查,同规格优质蟹比劣质蟹 In recent years, the continuous development of crab farming, aquaculture benefit level from the previous profiteering into the profit status. Crabs have entered the table of ordinary people, although the development of crab farming enriched people’s diet, but the benefits for crab farmers is declining. Therefore, the current energy of crab farmers should focus on how to improve the economic benefits of crab farming. According to the current market research, with the same quality crab inferior crab