随着河蟹养殖业的发展,育苗场不断增多,人工育苗技术逐渐提高,出现了河蟹苗种供大于求、价格下滑的情况,因此,在河蟹育苗产业上对技术人员的要求越来越严谨,低风险、低成本、高产量、蟹苗质量优良才能使育苗场和养殖户双方都满意。作者在本年度河蟹工厂化育苗时平均每立方水体出 With the development of crab aquaculture, the number of nursery grounds is increasing and the technology of artificial seedling raising is gradually increasing. There is a situation that crab seed supply exceeds demand and prices decline. Therefore, the requirements for technicians in crab breeding industry are getting more and more stringent, Low-risk, low-cost, high-yield, high-quality crabs can satisfy both nurseries and farmers. The author of this year crab plant breeding seedlings per cubic cubic meter of water out of the average