1. Breeding pond requirements: Crabs like to grow in an environment with sufficient water sources and clean water quality, so it is best to choose a pond far away from the city and in a pollution-free place. In addition, some clay, sand or subsoil should be placed at the bottom of the pool, and the water depth should be between 0.6-1.5m.
2. Keep the pond clean: After the crabs have been released for a period of time, some bleaching powder should be sprinkled in time to disinfect the water. After 3-4 days of disinfection, about 150kg of organic humus fertilizer can be put into the pond. After a few days, the color of the swimming pool will gradually turn blue-green, and the water should retain its clean and hygienic quality. Usually the inventory is available after 5-6 days in the liquidation pool.
3. Release crab seedlings: Go to the specialty market to buy some crab seedlings, and then put the crab seedlings into the pond at an appropriate ratio. Generally, a two-year breeding model can be adopted, that is, crab seedlings are purchased at the end of May and beginning of June, and they are extensively bred in the pond. At the end of the year, the crabs can be bred, and these crabs are released into the pond in the spring of the second year. Usually, crab stocking specifications 100-200 pieces/kg. Stocking 300-500 crabs per acre of water surface and releasing them appropriately can improve the size and quality of crabs leaving the pond.
4. Water quality control: When crabs are cultured in ponds, very high requirements are placed on the water quality used. The pond water needs to be disinfected. By using bleaching powder to disinfect the pond, the water quality must be kept clean to avoid water quality problems.
5. Crab disease prevention and control: Crab disease prevention and control should focus on prevention, early detection and early treatment, prevention first when there is no disease, and early treatment when there is disease. Different methods should be adopted for prevention at different growth stages. .