我市承担了“大规格河蟹良种规模化培育技术研究与开发”项目。经过两年来的研究,已圆满完成了项目计划任务,现将主要技术总结如下:一、材料与方法1.池塘的选择与建造:试验池4只,合计面积为15.4亩,每只池面积为3～5亩,池深1.2～1.8米,池形长方形,东西长,南北短,池埂坡比1∶3,在 Our city undertook the project of “research and development on large-scale cultivation of large-scale crab breeding varieties”. After two years of research, the project planning task has been successfully completed. The main technologies are summarized as follows: I. Materials and Methods 1. Selection and Construction of Ponds: There are 4 test ponds with a total area of ​​15.4 mu and each pond area is 3 ~ 5 acres, the pool depth of 1.2 to 1.8 meters, pool-shaped rectangle, east-west long, north-south short, pool slope ratio of 1: 3, at