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Green prawns are currently the dominant breeds with great potential for development in the special aquaculture industry and have now been widely promoted and cultivated. In order to change the low yield of shrimp culture in the pond, the author adopted a one-year double-season shrimp model to feed the full-price pellet feed and achieved good results. The main technical points are as follows: 1. Materials and methods 1. Pond requirements Green shrimp have high oxygen consumption, are not tolerant to hypoxic conditions, are also benthic animals, and have poor swimming ability. They like activities at the bottom of the pool. Therefore, the area of ​​shrimp culture should not be too large. Generally, the area of ​​shrimp ponds should be 3 to 8 acres, with a slope ratio of 1:3 to 1:3.5, a water depth of about 1.5 meters, and no silt at the bottom of the pool. The water source is pollution-free. National fishery water standards. Two months before stocking, the seedlings were thoroughly cleared with quicklime, and aeration facilities were installed in each pond. 2. Seedlings Sources of young shrimp are natural seeds purchased from Taihu Lake; quail and salmon are purchased from local fish farms. 3. Planting aquatic grasses Green crustaceans are crustaceans with shelling and mutual disability. Therefore, in order to avoid the occurrence of mutual disability of the green shrimp, it is necessary to grow some suitable plants to prevent the mutual existence of fresh shrimps. There are two main types of plants for water plants: one is water peanuts planted around shallow waterways near the pool; the other is submerged plants planted at the bottom of ponds with shallow water, with black-leafed black algae, Elodea, etc. Rapid, so when there are too many plants in the pond, the sparse water can be removed by artificial means, so that the distribution of aquatic plants in the pond is the best. Generally, the area occupied by aquatic plants should be controlled at about 30%. 4. Set the net to set a 1033 mesh summer bamboo net in the middle of the shrimp pond, fixed with a bamboo frame, and set it in a water tank at a distance of 20 cm to 40 cm, with a slope of 15-20 to allow the shrimp to crawl up and down. The platoons are 3m to 4m in length, and the length is determined by the pool. Generally, there are 2 rows of ponds set around 5mu. Second, the main technical measures 1. Seed breeding shrimp growth speed, short cycle, in a suitable environment for cultivation, the food is sufficient, the shrimp after 2 months of feeding up to 3 grams per end of commercial shrimp. Therefore, the shrimp species can be reared in spring and summer, and two-year-old breeding can be adopted. Summer stocking is carried out in July, about 40,000 to 60,000 shrimps per acre of about 1 cm, and a small amount of carp species are released after 10 to 20 days. The stocking specifications require that the specifications be neat and robust, and that the stocking time should be selected when it is sunny in the morning or when it is cloudy and not hot. When stocking, avoid seedlings during the peak period of shelling. By the end of August and September, there will be a batch of spawning hatchlings of small shrimps. The size of the shrimps at the end of the year is generally between 2 cm and 3 cm. It can be used as spring stocking seedlings, and the general acre is between 15 kg and 20 kg. 2. Feeding management According to the feeding habits of the shrimp, adhere to the "four rules" principle. Normally, it is fed twice a day for 8 to 9 hours and 5 to 7 in the morning, and the total amount is 1/3 in the morning and 2/3 in the afternoon. The bait should be placed in the shallow water area of ​​the watery grass and evenly distributed. The daily feeding amount of the shrimp seedlings is generally controlled at 3% to 5%, and the feed is fed with fine particles in the early stage. With the increase of individual shrimps, they can be appropriately fed with particles of the corresponding specifications. When feeding, observe carefully the feeding conditions of the shrimp. Generally, it is appropriate to eat 2 to 4 hours each time. 3. Water quality management In the hot season, it is necessary to add water or change water once a week, first drain the bottom old water, and add 15 cm to 20 cm of new water. At night or in the early morning, the floating head of the shrimp must be found. The aerator must be opened and the new water must be filled. Especially for the weather before the sultry or thunderstorm, measures of adding water and changing water should be taken 24 hours a day to keep the water in the pool flowing. 4. Daily management 20ppm of quicklime or dibromohydantoin, chlorine dioxide and other disinfectants are used to sterilize the water and kill pathogens and pathogens every half month. At the same time, observe whether ciliates are attached to the green shrimps. If any, use a 0.7ppm copper sulfate Quanchiposa or a 1ppm "Filipina net" Quanchiposa, and repeat it every 7 days. 5. Timely catching shrimp grows to 4 centimeters to 5 centimeters and can be caught and listed. General spring release seedlings from May to July arrest, summer seedlings from September to November to catch the listing. The planting of aquatic plants and the setting of nets in the pool are effective measures to improve the survival rate and yield of the shrimp, which is beneficial to the growth, life, and concealment of the clams of the shrimp, and can make full use of the water body to increase the yield. However, it should be noted that transplanted plants should include hydroponic plants and buoyant aquatic plants, and the area should also be in an appropriate proportion. The mixed ponds in ponds are both beneficial to the use of water space and to the regulation of water quality. They also increase fish production and economic benefits. Adopting the double-season breeding model can improve the utilization rate of ponds and the economic benefits of shrimp culture. Because in winter and spring, the seedlings are released in January and captured in June; in summer and autumn, they are released in July and harvested before the Spring Festival. Therefore, the ponds are used all year round, thereby increasing the economic benefits of the shrimp culture.