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近年来,河蟹养殖在东北地区蓬勃发展,许多养殖户取得了一定的经济效益,但也存在着诸多制约河蟹养殖发展的不利因素,其中,养蟹户提出最多的共性问题是河蟹养殖成活率较低,即秋季回捕只数与春季投放只数的比率较低,一般为20%～30%。笔者根据生产和经验,总结出东北高寒地区河蟹养殖成活率低的几点原因,并提出了相应的解决措施。
In recent years, crab farming flourished in the northeast region, many farmers have achieved some economic benefits, but there are also many unfavorable factors that restrict the development of crab farming. Among them, the most common problem raised by crab farmers is the survival rate of crab farming Low, that is, the number of fall arrests and the spring release only the lower the number of the number, usually 20% to 30%. Based on the production and experience, the author summarizes the causes of the low survival rate of crab farming in northeastern alpine regions and puts forward corresponding solutions.