针对河蟹养殖因普遍存在规格小、病害多而影响经济效益的突出问题,我们在2001年开展了“大规模商品蟹的生态养殖技术研究”,取得了明显成效,经初步总结形成实用技术如下: 一、池塘条件 地塘以新开挖池塘（推土机开挖）为最好,一般池塘也可,具体要求:面积10亩-30亩,最小不低于5亩,最大不超过50亩;水深1.2m—1.8m,平均1.5m左右;坡比1:3—4, In view of the outstanding problems of crab farming due to the widespread prevalence of small size and disease-affecting economic benefits, we carried out the “Research on Ecological Breeding Techniques of Large-scale Commercial Crabs” in 2001 and achieved remarkable results. The preliminary technical conclusions are as follows: First, pond conditions Di ponds to dig the new pond (bulldozer excavation) as the best, the general pond can also be, the specific requirements: an area of ​​10 acres -30 acres, a minimum of not less than 5 acres, the largest not more than 50 acres; depth of 1.2 m-1.8m, an average of about 1.5m; slope ratio of 1: 3-4,