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随着河蟹人工养殖技术的普及 ,成蟹的市场价格迅速下调 ,但是大规格商品蟹的市场价格依然坚挺 ,为了适应河蟹养殖业进一步发展的要求 ,为河蟹养殖户提供性腺发育正常的大规格幼蟹。 2 0 0 0年 4月～2 0 0 1年 3月我们在淮南施家湖进行了分级培育大规格幼蟹的试验。现将试验情况总结如下 :
With the popularization of crab artificial breeding technology, the market price of crabs has been rapidly reduced. However, the market prices of large-size commodity crabs have remained firm. In order to meet the requirements of further development of crab farming, crab farmers are provided with large-sized gonadal development crab. April 2000 ~ March 2001 We carried out a large-scale cultivation of large-size crab at Huai Nan Shi Jia Hu. Now test the situation is summarized as follows: