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近几年来,随着河蟹养殖业的飞速发展,苗种需求量日趋增大。如何有效控制亲蟹胚胎发育,解决河蟹多茬育苗的亲蟹来源问题,已成为人们关注的焦点。一些科研和生产技术人员,提出了不少延缓亲蟹胚胎发育速度的方法和措施,但由于种种因素的制约,效果总是不太理想。2001年,我们设计了利用循环水低温保存河蟹抱卵亲蟹的方法,经过2年的试验,取得了较好效果。现将有关技术总结如下。1 基础设施及操作原理1.1 水泥池组成部分 亲蟹池,池深40 cm,池底总面积
In recent years, with the rapid development of crab aquaculture, seed demand is increasing. How to effectively control the development of crab embryos and solve the problem of the origin of crabs of crab crab breeding have become the focus of people’s attention. Some scientific research and production technicians have put forward many methods and measures to delay the development of crab embryos. However, due to various factors, the effect is not always satisfactory. In 2001, we designed a method of using cryogenic temperature of circulating water to store crabs and crabs in crabs. After two years of experiments, we achieved good results. Now the technology is summarized as follows. 1 infrastructure and operating principle 1.1 The composition of cellar pool crab pool, pool depth 40 cm, the total area of the bottom