1 Semi-intensive culture ponds can be rebuilt on the basis of existing seawater shrimp ponds, with an area of 40-50 mu, a pond depth of 1.5 m, a flat bottom inclined to the drain, and a strict separation between the water inlet and the drain, the greater the distance, the better. Intensive culture ponds are generally about 10 mu and a pond depth of 2.5-3 m. Pool depth1.5m or more.

2. The pond must be cleaned, disinfected and exposed to the sun before stocking. After the bottom mud is removed from the pond, 70-80 kg/mu of quicklime is evenly sprinkled to kill pests and pathogens in the pond; After 3-4 days in the sun, wash the pond and wash away the limewater; Then add 5-10cm of water to make the PH value of the pond water 8.0-8.6, and then sprinkle long-acting water disinfectant, bromochlorohydantoin, etc. throughout the pond according to the dosage of 200-250g/mu to completely kill pathogenic organisms and harmful organisms.

3. The water quality should be fresh, pollution-free, with dissolved oxygen above 5mg/L, PH value of 7.8-8.5, transparency of 30-40 cm, and H2S concentration at the bottom of the pond not exceeding 0.0 1ppm.

4. Ponds in intensive ponds and semi-intensive ponds must be equipped with breeding machines. The allocation quantity is determined according to the planned yield index, such as 400kg per mu, 0.5 sets of motor frequency of 1. 1 kw per mu, and 0.8 sets of motor frequency of 50hz, such as 600kg per mu. In the specific production, the 1. 1 kw feeding machine can provide oxygen enrichment for the surface of 4 mu of shrimp culture.

5. Before shrimp larvae enter the pond, cultivating enough basic bait organisms is a key measure to improve the survival rate of shrimp larvae, enhance their physique and accelerate their growth in the early stage of shrimp culture. At the same time, bait organisms will play an important role in purifying water quality, absorbing harmful substances such as ammonia nitrogen and hydrogen sulfide in water, reducing shrimp diseases and stabilizing water quality.

6. The time for cultivating basic bait organisms is determined by adopting different cultivation methods and water intake methods. Generally, the culture pond is conducted10-15 days before the seedlings are released, and the culture method can be about one week after the pond is cleaned, with 50cm of water, and organic fertilizer and chemical fertilizer applied to cultivate the basic bait organisms. Apply 3kg/ mu of urea, 0.5kg/ mu of calcium superphosphate, or sprinkle 0.5 g-1g/m3 of viable bacteria in the whole pond to make the pond water yellow-green or dark brown, with a transparency of 25-40 cm and a ph value of about 8.0. The amount of fertilization should be flexibly controlled according to the bottom material of the shrimp pond.

7, to choose robust and lively, uniform specifications, clean body surface, full intestines, sensitive reflection, body transparency, no lesions, strong vitality of Penaeus vannamei shrimp.

8. The general specification is 1.0— 1.2cm, and the body length is preferably more than1.5cm..

9. The optimum water temperature for the growth of Penaeus vannamei seedlings is 22℃-35℃. Within this water temperature range, the released shrimp seedlings have fast growth speed, large food intake, strong physique and strong disease resistance.

10, the average shrimp pond is1.5-20,000 fish/mu, the semi-intensive shrimp pond is 20,000-30,000 fish/mu, and the intensive shrimp pond is 30,000-40,000 fish/mu. The factory culture has 200 fish per square meter, and the fish per mu is stocked above/kloc-0,000 fish. The specific stocking density depends on pond conditions, culture technology and management level.

1 1, when the shrimp seedlings are released, it is necessary to do a good job of "adding water" so that the water temperature in the seedling bags is basically the same as that in the pool, and then the bags can be opened and stocked on the left and right sides of the upwind pool.

12. Cheap chilled fish pulp and small shellfish are generally fed, and some compound bait can also be fed. The feeding amount should depend on the shrimp size, survival rate, water quality, weather, feed quality and other factors. The daily feeding amount is 8-10% of the shrimp's body weight in the early stage (1-3 cm) and 5-7% in the middle stage (3-10 cm). Late 3-4%. Feed it many times a day, and the amount of feeding at night accounts for 60-70%.

13, patrol the pond every morning, noon, evening and midnight to observe the water color, shrimp activity, growth and satiety rate, so as to adjust the feeding amount and whether to start the aerator.

14, using active microecological agents or substrate improvers to adjust water quality, adding active feed microorganisms and FRC—-vitality source additives to feed can effectively improve the intestinal function of prawns, increase their absorption rate of feed, inhibit the occurrence of pathogens, enhance the immune ability of the body and promote the growth of prawns.

15, every 1 0-15 days, the whole pool can be sprinkled with hydantoin disinfectants such as bromochlorohydantoin, dibromohydantoin and dichlorohydantoin1time, and the dosage is 0.2 ppm-0.3 ppm. For oral administration, green products such as shrimp growth promoter, pure Chinese medicine preparation, FRc—-vitality source additive and immune enhancer can often be added to the feed. It can enhance the immunity of shrimp, remove harmful substances in shrimp, and play a role in preventing and treating diseases.