Crab culture technology

First of all, it is necessary to cultivate buckle crabs, sprinkle and disinfect them with 75 kilograms of quicklime per mu for 20 days before releasing crab seedlings, and set up necessary escape prevention facilities. Choose ponds with sufficient water sources, convenient water intake and drainage, good water quality pollution and good ventilation. Then transplant aquatic plants, set up the necessary anti-escape facilities, and feed them in the same way as fish farming in ponds.

1. Pond conditions

The water depth of the pond is maintained at about 0.6fu 1.5 meters all the year round, and the water depth varies everywhere, and the shallowest 10cm, several mounds slightly above the surface of the water can be built in the pond, that is, Crab Island, where aquatic plants can be transplanted, the pond is not too steep, the slope ratio is generally below 1RU 1.5, artificial caves can also be built. Generally in the first half of the release of seedlings with monthly quicklime pond disinfection, the dosage of 75 kg per mu.

2. Transplant aquatic plants

The main species of aquatic plants are duckweed, Manjianghong, water hyacinth, water floating lotus, verticillium verticillata, goldfish algae, bitter grass, water peanut and so on. Escape prevention facilities mostly use plastic film, but also use cement board, depending on their respective conditions.

3. Seedling density

Seedlings purchased from other places can not be put directly into the pond. Soak in water for 3 minutes, take out and place for 10 minutes, repeat 2murl 3 times. After the young crabs gradually absorb enough water and adapt to the water temperature, put them into the pond, which can improve the survival rate. The density can be controlled within 1500 / mu and the specification is 120mur150 / kg. If the conditions are poor or shrimp culture can appropriately reduce the amount of seedlings.

4. Input and feeding management

The feeding method of crabs is like that of fish farming in ponds, that is, depending on the season, the weather, the water quality, the activity of the crabs, timing, fixed point, quality and quantity.