The water for seeding is natural seawater, which is filtered by two layers of sand, fully aerated for 4 days after entering the water, and colored on the fifth day. On the evening of the 6th day, the seedlings were released. When the seedlings were released, they were splashed and fed with the shrimp slices 100g filtered by the screen. The water temperature is controlled at about 26℃ in the early stage of seedling release, and then it is gradually heated to 29℃ by a boiler. During the cultivation period, the water temperature is 28-30℃ and the pH value of the water body is about 8.3. ? The daily feeding amount is 600,000 shrimps, 8 meals a day and once every 2 hours. The feeding amount will be increased by 15%-20% every day. During this period, the prevention of bacterial diseases should be focused on, and the remaining materials should be checked. During the treatment period, water should not be changed or added as much as possible for 3 days, and gradually changed after 3 days, with less water added. Stabilize the water quality every day, and pay attention to observe the vitality of shrimp seedlings and the reaction when they come out of the water. The daily water exchange rate is about 30cm, depending on the actual situation. Shrimp cultured for about 0/5 days/kloc-shall be divided into ponds in time after reaching the specification of 2-2.5cm. The water in the divided ponds is also natural seawater for about 4 days, and the temperature is basically the same. After the water is injected, it will be colored. Feed 3 kg of feed every day, feed 8 meals every day, once every 2 hours.

? There is obvious "red liver" phenomenon during 30-50 days of culture, so it is necessary to strengthen feeding, provide enough nutrition and pay attention to changing water. The inner pipe of the sewage system must be replaced in time within 25-40 days to avoid the serious deterioration of the water body caused by the blockage of the inner pipe and the shrimp disease. After 45 days, it enters the rapid growth period, and the daily feeding amount is increased by 15%, 7 meals a day, 30-45 minutes after each meal, and the daily water exchange amount is 30cm (flexibly controlled according to the water quality). In the future, the aquaculture situation is the same as this stage, except that the water exchange rate has increased, and nitrite is mainly detected. The water exchange rate is determined according to the level of nitrite, and bacteria are replenished in time after water exchange.

? After 43 days, it was obvious that the shrimp grew slowly, and after 52 days, it was changed to 388? M3 water body uses a 5.5KW fan, and the inflated spray can be 10cm higher than the water surface. After 85 days of culture, the sampling reached 30-32 fish/kg. At this time, a 36m2 pond with a water depth of 90cm has reached 360 kg, with an average of 1 1.5 kg per cubic meter of water. Use the ground cage to catch 60 kg from each pool and continue to feed, and the amount of bait is basically not reduced.