提高养蟹效益的几项措施近年来，随着河蟹养殖业的不断发展，河蟹市场发生了较大变化，价格大幅下降，比较效益降低。针对这一情况，笔者认为，欲提高养蟹效益，必须从以下几方面采取措施。一、选购优质蟹苗。从养殖效果看，长江水系的河蟹苗优于辽河水系的河蟹苗，欧江水... In recent years, with the continuous development of crab farming, crab market has undergone major changes, the price dropped significantly, the more effective reduction. In response to this situation, I believe that, to improve the efficiency of crabs, we must take measures from the following aspects. First, buy high-quality crab seedlings. From the breeding effect, the Yangtze River crabs better than the Liaohe River crabs, the European ...