浙江省淡水水产研究所为了解决蟹苗来源,于一九七○年在奉化县和奉化海带育苗厂的支持下,开展了蟹苗繁殖试验。今年在平湖县乍浦和白沙湾又进行这一试验,现已育出大眼幼体十万只。通过两年来试验,初步掌握了亲蟹饲养、交配、怀卵及孵化幼体等一些技术问题。河蟹苗繁殖先要有足够的怀卵蟹,目前用两种方法可得到,一种是到海边捕捉怀卵蟹;另一种是把未怀卵的亲蟹放入海中或海水池中暂养而使其交配怀卵。该所采用后一种方法,两年来总共获得怀卵蟹一千五百只,怀卵率 Zhejiang Institute of Freshwater Fisheries in order to address the source of crab, in 1970 in Fenghua and Fenghua kelp nursery plant support, launched a crab breeding test. This year in Pinghu County Zhapu and Baishawan again this experiment, has now erupted a large octopus 100,000. After two years of experimentation, we initially mastered some technical issues such as raising crabs, mating, pregnant with eggs and hatching larvae. River crab breeding must have enough pregnant egg crab, currently available in two ways, one is to capture the pregnant pregnant egg crab; the other is not pregnant with the crab into the sea or sea crab holding And make it pregnant with egg. The latter method used a total of 1500 pregnant pregnant crabs in two years to conceive eggs