1, a foot to fill the seed, catch large and 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. 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, the juveniles are completely removed from the mother and the broodstock are caught. The amount of larvae in the reservoir is measured based on the amount of broodstock (predominantly female) that are caught. Generally, 200 female shrimp are produced per female. Calculations. Determine the amount of juvenile shrimp, after about 10 days of feeding, according to the size of the number to determine the amount of restocking shrimp, 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, 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. 4, directly stocked shrimp. Acre laying specifications within 40 per kilogram of sexually mature shrimp 40-50 kg, male to female ratio of 1.5-2:1. Requires stocking of healthy, healthy, healthy and 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. 5, directly stocking hold egg shrimp. This culture method differs from that of stocking shrimps for mating, spawning, and rearing. Breeding eggs directly is the method of holding eggs. The transport of egg-bearing shrimp is troublesome. Injury or egg damage during transport will affect the hatching of fertilized eggs. It is best to use egg-holding shrimp in its own pond or the egg-bearing shrimp purchased nearby. The shorter the transport time of egg-bearing shrimps, the shorter the shipping 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 fertilized eggs from falling off during transport and affect litter size, while holding the eggs, add 5% of the total amount of eggs to the male, so that the females that have fallen out of the fertilized eggs can continue mating and spawning after a period of fattening. Does not affect the planned birth size. After the oviposition of shrimps is completed, it is necessary to strengthen the feeding and management and create an ecological environment conducive to improving the hatching rate. Since some of the egg-bearing shrimps are born before winter, part of them need to hold their eggs for winter, and some of them must be wintering, it is particularly important to manage the overwintering. There must be enough hidden objects and caves for concealed wintering. At the same time, appropriate measures should be taken to maintain warmth, such as laying a certain amount of plant stalks, etc., to increase the hatching rate of fertilized eggs and the survival rate of winter diets. After the spring, the broodstock should be caught in time to prevent affecting the growth of the young prawn. During the process of catching the broodstock, it is necessary to strengthen the feeding and management. At the same time, the larvae must be fed with broodstock to prevent snatching and slaughtering. 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