I. Tangkou Construction Choose fish ponds with sufficient water sources, good water quality, and convenient drainage and irrigation. The area requirement for adult fish ponds is 60-100 mu, and the pond water depth is the most suitable for 2.5 meters. Generally used from the east to the west of the rectangle, the ratio of length to width of the fish pond is 2:1 or 3:2, the slope ratio of 1:2, the bottom of the pond is best loam, sandy loam soil, followed by soil. The slope of the bottom of the pool is 5:1000, with high and low rows, and the inlet and outlet are separated. The height of the pond exceeds the historical maximum water level by more than 0.5 meters, and the width of the dome is about 5 meters. The water, electricity, roads and other infrastructures are fully equipped, and they are equipped with aerators, feeders, etc. Second, prepare before restocking 1, pond clearing. The pond is cleared in the winter. First, the fish in the pool should be pulled as far as possible (to avoid losing the dry pool), and then the pool water should be drained to remove excess silt at the bottom of the pool. The ice at the bottom of the pond was exposed to ice for several days to reduce the pests and diseases, loosen the soil and accelerate the decomposition of organic matter. The fish ponds were cleaned thoroughly with quick lime in front of the pond. The amount was 100 kg/mu (dry clear pond). New water was injected on the fifth day after the clear pond. 2, water injection and fertilization Barracuda species were stocked with fermented organic fertilizer in the corners of the pond 10 days before stocking. The amount of fertilizer applied was 100 kg/mu. Fertilizer should be disinfected by bleaching powder at a rate of 1%. Then, new water is injected and filtered with polyethylene screens when entering the water. The water depth is about 1.5 meters. 3, adjust the salinity The species of barracuda must be adapted to the aquaculture water. After sufficient desalination, the salinity is generally required to be below 2. If the salinity of the seedling cultivation pond and the rearing pond differ greatly, the salinity of the seedling cultivation pond should be gradually adjusted until The rearing pool is close. Third, fish stocking. In general, artificial breeding of high-quality barracuda species is conducted in 24 months. About 0.2 per mu of stocking species is 20 tassels per kilogram, and the stocking size is approximately 0.5 kg/150 kg of Chinese sturgeon species, and the specification is approximately 250 g. Tail 30 species of carp species, 40 species of white carp species with a size of about 200 g/tail, 20 species of black species with a size of about 1500 g/tail. Potted with potassium permanganate 20 mg/L for 5-10 minutes before stocking. It is worth noting that the Japanese oyster species in Japan should be divided between male and female to prevent mutual killing and affect the aquaculture production and economic benefits. Fourth, feed feeding. Feeding should be based on the "four definite" feeding method, while throwing high-quality barracuda feed, but also regularly add 1% immune polysaccharide or vitamin C feeding. Daily feeding standards, the juvenile stage accounts for about 8-10% of the fish's body weight, adult stage is between 5-7%. The total price is 30% with the protein content of the pellets. The size of the bait pellets changes with the growth of the fish. The Japanese sturgeon is mainly fed with low-value seawater miscellaneous fish, supplemented by freshwater miscellaneous fish, and the daily feeding amount is about 5-10% of the carcass weight. The feed should be fed on the food table and two shots per day. Times, once in the afternoon and one in the afternoon. Fifth, water quality management. The pond is filled with fresh water once every 7-10 days, about 10-15 cm each time; and a quicklime solution is applied to the pond every 20 days or so, each time the dosage is 15 kg per mu; Tianshi 1 superphosphate, each dose of 20-25 kg per acre. The calcium phosphate can be applied only 3-5 days after the release of quicklime, to prevent the water body from being too alkaline to reduce the fertilizer effect. Keep the pool water "fertile, live, tender and cool" with a transparency of about 25 cm. In the high temperature season of summer, Bacillus spp. is used once every 15 days to decompose organic matter in ponds, reduce oxygen consumption of organic matter, improve water quality, and kill or inhibit pathogenic microorganisms. In case of weather changes, take water, change water, and increase oxygen. Aerators should be opened at a proper time. It should be turned on for 2-3 hours at noon on sunny days. It should be turned on for 3-5 hours every day in the early morning of the breeding period. Sixth, daily management. Adhere to the morning and evening patrols to observe changes in water color and fish dynamics. Check the food and food establishments once a day in the afternoon to understand the fish’s feeding conditions, so as to establish the amount of feeding the next day, clean the food table frequently, and sterilize the foodstuffs and food premises every 2 weeks with bleaching powder. VII. Benefit assessment. High-efficiency pond polyculture can yield 300 kg of Chinese sturgeon, 1000 kg of barracuda, 100 kg of flower pot, 100 kg of white mullet, and 150 kg of herring. The yield per mu is 38,000 yuan, and the net profit is over 10,000 yuan. Natural Spices,Spices Natural Pure,Natural Spice Orleans Flavor,50G Best Spices Zhejiang Shanying Trading Co.,Ltd. , https://www.shanyingtrading.com