河蟹,俗称螃蟹、毛蟹,是我国的珍贵水产品之一。每逢新春佳节,人们多以河蟹为上等鲜货争相购食,品享鲜味之美。随着生活水平的改善,人们食欲标准的提高,冬季食鲜活河蟹的欲望与日俱增。然而,我国北方冬季结冰,河蟹越冬期一经进池塘或入洞穴,破冰捕捞就难以奏效。辽 Crab, commonly known as crabs, hairy crabs, is one of China’s precious aquatic products. During the Spring Festival every year, most people take crabs as their first-rate fresh products to buy food and enjoy the delicious taste. With the improvement of living standards, the standard of people’s appetite is increased, and the desire of living fresh crab in winter is increasing day by day. However, when the northern part of our country is frozen in winter and the crabs enter the pond or into the caves during the winter, the ice-fishing is hard to work. Liao