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河蟹是我国淡水水产品中特有的优质产品,养蟹已成为各地农业开发的重头戏。我省是河蟹生产的大省,近几年,虽然养蟹面积和产量有突飞猛进的发展,但蟹质量却在持续下降。90年代初期,3两和3两以上的蟹可占到总产量的60-70％。近几年3两和3两以上的只占到30-40％,极大部分河蟹在1.5-2两之间,外壳变厚,味道差,成熟早,这严重制约了河蟹业的发展。
Crabs are unique quality products of freshwater aquatic products in our country. Crabs have become the highlight of agricultural development all over the country. The province is a big province for the production of crabs. In recent years, although the area and output of crabs have been developing by leaps and bounds, the quality of crabs has been declining continuously. In the early 1990s, 3 two and three more crabs accounted for 60-70% of the total output. In recent years, two and three more than three accounted for only 30-40%, most of the crab in the 1.5-2 between the two, the shell thickening, bad taste, mature early, which severely hampered the development of crab industry.