1 养殖环境1.1 应选水源充沛、清新、肥爽、溶氧足、饵源丰富等符合我国《渔业水域水质标准》（TG35）的水面养蟹。1.2 严格消毒。面积较小的新建塘和改造后的老塘都要在基本放干水后用生石灰、漂白粉、二氧化氯等残毒较少、较轻的药品消毒;面积大的水面,可在放养河蟹苗种1个月前每亩用30～40kg生石灰进行水体消毒。1.3 种好水草。水草是河蟹栖息、避敌蜕壳的场所,也能净化水质,进行光合作用,增加水中溶氧,同时,还是河蟹喜食的好饵料,并且在夏季可起到防暑降温、促进河蟹生长的作用。对没有水草的蟹区,在清塘消毒后要及早栽种水草,深水区宜栽种苦草、轮叶黑藻、马来眼子菜、伊绿藻等沉水植物,浅水区宜栽种稗草、水花生等水草。对已有水草的蟹区,要优化结构,调控覆盖 1 aquaculture environment 1.1 should choose a water source is plentiful, fresh, fat, oxygen-rich enough, rich in bait and other resources in line with China’s “Fisheries Water Quality Standards” (TG35) water crabs. 1.2 strict disinfection. Small area of ​​the new pond and the transformation of the old pond should be basically put the dry water with quicklime, bleach, chlorine dioxide and other less less, less drug disinfection; large area of ​​water, stocking crab seed 1 month ago with 30 ~ 40kg per acre of lime for water disinfection. 1.3 kinds of water plants. Water grass is a habitat of crabs, shelter enemy molt shell sites, but also to purify water, photosynthesis, increase dissolved oxygen in the water, at the same time, or crabs eat good food, and in the summer can play a summer heatstroke, and promote the growth of crabs . For crabs without aquatic plants, aquatic plants should be planted as soon as possible after disinfection in Qingtang. Submerged plants such as Vallisneria, Hydrilla verticillata, Hydrilla verticillata, Eichhornia crassipes, and Eichhornia crassipes should be planted in Sham Shui Po. Other aquatic plants. Crab on the existing aquatic plants, to optimize the structure, control coverage