In the past few years, there were only cages and net cages for breeding. In recent years, with the popularity of the black market, Heilongjiang has grown rapidly, has a wide temperature range, has strong adaptability, has fewer fish diseases, and has high feed efficiency. The advantages gradually become a treasure of the shrimp pond culture. First, the choice of breeding ponds: The size of the shrimp pond is 30mu-40mu. The water depth should be at least 2m. The shrimp pond should be close to the sea. The water temperature in the high temperature in summer should not be higher than 28°C. The water inlet and outlet systems are relatively independent, and the water can be filled with water in large and small tides. There is no water around the shrimp pond. Industrial and domestic sewage injection. Second, the treatment of aquaculture ponds: 1. Dredging and Disinfection: Remove the surface silt with a bulldozer by 10cm to 15cm, and then apply quicklime 70kg to 80kg/mu to disinfect and expose it to the spring of next year. 2. Influent fertilizer ponds: Intake water in mid-March, when entering the water, take nets to prevent other miscellaneous fry from entering the pool and increase the cost of breeding feed. When the pool water reaches 30cm-40cm, the chemical fertilizer pond is used, and the basic bait organisms that mainly apply urea and phosphate fertilizer to cultivate shrimp ponds reach the water level of about 1.5m in mid-April, and the transparency of the pool water color reaches 25cm-30cm. Third, fry stocking: 1, the choice of fry: Should choose no damage to the body surface, strong struggling, swimming fast, the size of 125 grams -150 grams of large-size seedlings. 2. Stocking density of fry: The stocking density is usually related to the management level of the feeder and the water exchange conditions. Normally it needs 400 to 450 tails/mu. After careful management for seven to eight months, it can be achieved by December. 500 g / tail, its survival rate of culture exceeds 90%. 3. Medicinal bath: Since the fry is susceptible to seawater larvae, the fry is bathed with 2ppm-3ppm copper sulfate for 1 minute to 2 minutes before entering the pool. IV. Management measures during cultivation: 1. Feeding of bait: When feeding, it must be fixed at regular intervals. The bait on the production mainly consists of frozen fresh-mixed fish, shrimp, and oyster fish. In principle, it is fed twice a day. The daily feeding amount is 6% of the fish’s body weight. -8%. The bait should pay attention to freshness, prevent spoilage, and often change the type of bait being fed. When feeding bait, cut into small pieces to facilitate feeding. Because the fish eats quietly, after the bait is fed, the fish swim down on the water surface and dive quickly. Feeding must be patience and feed until 80% of the fish are fed. 2. Water quality control: Pay attention to the adjustment of water quality during fish farming. Before the end of June, the amount of water exchanged should not be too large. Generally, it should be exchanged once every 5 days - 7 days and once exchanged 20cm - 30cm. In the hot season, the exchange of water is correspondingly large, and the daily exchange should reach 10cm-15cm. When water is exchanged, the pool water must maintain a good water color, and the water transparency is about 30cm. 3. Anti-mutilation measures: The fish is fierce, with large individual differences and severe mutual disability. Therefore, the size of the fish should be basically the same. In addition, the fish enjoys activities around the hidden objects. Production requires the use of waste plastic buckets and tires in the pool as hidden objects to facilitate rest and activities and reduce opportunities for mutual mistreatment. 4, daily management: 1 Regularly patrol the pool, observe the fish's feeding and activity, find the disease and dead fish, diagnose it in time, identify problems, and take corresponding measures. 2 Every 15 days to 20 days, use nets such as nets to capture 10 to 20 tail fish to measure body length and weight, and adjust the amount of feeding according to the growth conditions. 3 pay attention to the prevention and treatment of fish diseases, prevention-based, supplemented by treatment, every 20 days or so in the feed mix terramycin fed. Assit Machine,Pellet Cooler,Pellet Packing Machine,Belt Conveyor Shandong Longze Mechanical Equipment Co.,Ltd , https://www.pelletmachinefactory.com