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1, the first year of stocking, the second year of harvest. This model is for ponds that have not raised freshwater crayfish. In the first year, small-sized freshwater crayfish were stocked, stocking specifications were around 100 per kilogram, and acre stocking was around 20 kilograms. After 1 year of normal rearing, they are not caught on the market and are left in the pool as broodstock. They are caught in the spring of the following year to catch the shrimp, and they are caught in the shrimp and found that they are kept back to the original pool and kept. At the same time as shrimp, the amount of juvenile shrimp in ponds was measured. According to the stocking plan, surplus juvenile shrimp (if there is insufficient amount of juvenile shrimp needs to be replanted), and after everything is properly prepared, normal shrimp feeding and management will be carried out. 2, breeding in the first year, the second year make up. This mode of cultivation is mainly aimed at the ponds that have been bred for the first year. After the first year of breeding, some shrimp are consciously left behind and are not caught. As the second year of broodstock, they are allowed to mate in the original pool. , spawning, breeding, generally 10-15 kilograms of shrimp left into the mu. In the spring of the next year, broodstock are removed from the mother's body after being completely removed from the mother's body, and the amount of prawn in the pond is measured based on the amount of broodstock (mainly female broodstock) that is caught. Generally, 200 female shrimp per female are produced. Calculations. Determine the amount of larvae, after about 10 days of feeding, according to the size of the shrimp feeding. The specifications of the shrimp to be added are as consistent as possible with the original pond shrimp, which is not only beneficial to production management, but also prevents mutual killing and increases the survival rate of the young shrimp. 3, directly stocked shrimp. Acre put specifications within 40 per kilogram of mature adult shrimp 40-50 kilograms, male to female ratio of 1:5-2:1. Requires stocking a healthy, no injuries, natural color of adult shrimp. Normal rearing and management after stocking, not fishing, letting mating, spawning, breeding, wintering, catching shrimp and excess baby shrimp in the spring of the next year, leaving the larvae under normal feeding and management, and ultimately rearing. Become a prawn. 4, a foot full of seedlings, catch big stay small. This mode of cultivation is direct stocking, but stocking specifications must be within 200 per kilogram, and the survival rate is too low for specifications. The amount of stocking depends on the conditions of the pond, feed status, economic strength, feeding level and other factors. The general stocking capacity is between 1 and 15,000. The outsourced shrimp seed should pay attention to the safety of transportation and should be handled properly when stocking. After being raised for a period of time, some of them will be caught immediately after they reach the market specifications, so as to reduce the amount of shrimp in ponds and ensure that the remaining shrimp can grow rapidly. In the fishing process, if the seed density is thought to be too thin, some of the seedlings may be supplemented as appropriate, and the amount of supplementation may be determined according to actual conditions. After the end of the entire growth period, it is possible to catch whole shrimps, and it is also possible to consciously retain part of the shrimps for use as broodstock for the following year. 5, directly stocking hold egg shrimp. If you choose to hunt prawns in your own pond or purchase them nearby, the shorter the transport time, the better. The litter size of each egg-bearing shrimp was determined by 200, and the stocking rate of the egg-holding shrimp was determined. In consideration of factors such as transportation and other factors, the amount of egg-holding shrimp was appropriately increased, and the increase was about 10%. In order to prevent the fertilized egg from falling off during transportation and affecting the amount of calving, while holding the eggs, add 5% of the total amount of shrimp to the male.