有不少养殖户反映,在河蟹养殖过程中,有时饲养管理得十分周到细致,可到头来经济效益却不太高,甚至亏本。经笔者调查分析,其主要原因是蟹苗选购不当,导致河蟹生长不快,成活率偏低,因此,养殖户必须科学地选购蟹苗,才能为以后养殖打下良好的基础,这 Many farmers report that in the crab breeding process, sometimes feeding and management are very thoughtful and meticulous, but in the end the economic benefits are not too high, or even loss. The author’s investigation and analysis, the main reason is the improper selection of crabs, leading to crabs unpleasant growth, low survival rate, therefore, farmers must scientifically buy crabs, in order to lay a good foundation for future farming, which