Crab breeding method

[0008] A method for cultivating crabs, comprising the following steps: (1), select a pond, select a pond of 2-4 acres, in the pond, there are deep water areas and shallow water areas, and the deep water areas and shallow water areas are in alternating bands, each The width of the deep water area is 1-1.5m, and the width of each shallow water area is 0.5-0.8m. The depth difference between the deep water area and the shallow water area is 10-20cm. Finally, expose the bottom of the pond to the sun for 2-3 days to sterilize, and then inject water into the pond. The water depth is controlled at 30-50cm, and the oxygenation rod is used to increase oxygen in the water, so that the dissolved oxygen in the pond water is above 8mg/L , plant aquatic plants in the pond, aquatic plants are water peanuts, duckweed, etc., and stock fry with a length of 2-5cm, and the amount of feeding per mu is 2000-3000 to provide food for crabs. When aquatic plants cover 70% of the pond area, Stocking crab seedlings; (2), seedlings stocking, soaking crab seedlings in 5% salt water for 3-5 minutes before stocking to remove microorganisms on crab seedlings, stocking density is 1200-1500/mu; (3), daily Management, do not feed within 10 days after stocking. After 10 days, feed the mixture of soybean meal and eggs. The ratio of soybean meal to eggs is 10:1. Add 2-5kg of feed per mu, 1-2 times a day, to increase the protein intake of crabs Increase the growth rate. After 1 month of stocking, inject water into the pond to make the water depth reach 1.2-1.8m. Use an oxygenation rod to increase oxygen so that the dissolved oxygen in the pool water is higher than 5mg/L. Change the bait put in. Mix soybean meal with wheat bran at a ratio of 1.5:1, and feed 2-3 times a day, 3-6kg each time. At this time, crabs can prey on fish fry and aquatic plants stocked in ponds, and appropriately reduce protein supplementation in artificial feed. At the same time, during the predation process of crabs, the firmness of the meat quality and the health of the crabs are enhanced, and the survival rate of the crabs is improved. The water quality remains clean.