First, scientific choice holding pool. Select a pool mouth that is close to water source, convenient for injection and drainage, and has an area of ​​3 to 5 mu and a water depth of 1.5 to 1.8 meters. Use 100 kg of lime per acre before use to completely clear the pool. After 5 days of influent water, the plants were evenly distributed in the pool and the coverage rate was above 40%. Second, crab quality requirements. Temporary raising of crabs requires a healthy body, uniform specifications, complete crustaceans, appendages, no disease, no injuries, and a full application. The selected crabs were immersed in 4% saline for 10 to 15 minutes and sterilized. In case of soft shell crabs and shell crabs in the stocking process, they should be removed separately and temporarily raised in the shell and then put into the holding pool. Third, the holding density. The general mu raises the crab 2000~2500 or 200~250 kilograms. Holding time: Liao crab 1 to 2 months, Chinese mitten crab 2 to 3 months. Fourth, strengthen management. During the holding period, feed once a day, and the amount of feeding is 3% to 5% of the amount of temporary crabs. The bait should be fresh and can not be rotted and spoiled, of which 60% is animal feed, such as small fish, crushed snails, chopped oyster meat, silkworm cocoons, animal organs, etc., can be fed plant foods are: soybeans, wheat , hawthorn, pumpkin, etc. During the holding period, every 5 to 7 days, choose to change the water at noon. Change the water every time by 15 to 25 centimeters. Sprinkle lime once every 20 to 30 days to increase the calcium of the pool water. Remove the bait, debris, and dead from the pool every day. Crabs, etc., keep the pool clean. During the holding period, regular sprinkling of 0.5ppm strong chlorine fines to disinfect the body of water, every half months with oxytetracycline, furazolidone feeding, even fed 5 days to prevent crab disease. If a water rat, water snake, frog, or other predator is discovered during the holding period, it shall be immediately killed.
