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Fish, shrimp, crab and fish
First, the pond is a pond near the square, surrounded by 8 meters wide, 0.6 to 0.8 meters deep, beach surface can be lifted to 1.2 meters, the bottom of the pool is sandy soil, less silt, water quality is good, complete water injection and drainage facilities, Small wooden boats can be set in the pond for feeding, fertilizing and managing. The inside of the pond is buried in the soil with a dense mesh of polyethylene mesh to prevent burrowing, maggots, crayfish, crabs and other holes. The pool is firm and leak-proof. Use asbestos tiles for escape prevention. At the beginning of a breeding cycle, the ponds should be dredged and repaired, strictly disinfected with quicklime, tea seed cake and other drugs. After filtration and water injection, adequate base fertilizers are applied to cultivate natural foods, and aquatic plants such as Artemisia halodendron and Vallisneria are planted. Before and after a large number of live snails to allow them to reproduce naturally; Second, seedlings species: After the clear pond pond stocking about 20 kg of heterotrophic crucian carp 200 kg, equivalent to 4.3 kg per mu. In the middle and later stages, due to the overgrown aquatic plants, grass grasses were controlled to release aquatic grasses and put a total of 400 kg, an average of 8.6 kg per mu. Green prawns: After clear ponds, young prawns can be reared, at 3 to 5 kilograms per mu, or about 25 pounds of broodstock per kg around 80 months before and after April, with an average of 0.5 kg per mu. Crabs: 8 to 90,000 “bean crabs†were reared before 1,000 months per kilogram of 1,000 larvae reared by macro-raised larvae, equivalent to about 1800 per mu. Other species: Ponds that cultivate shrimps and crabs all year round. Because they rarely use pesticides, they protect the natural resources such as yellow earthworms, loach and crayfish shrimps in ponds. Generally, they do not need to be seeded, allowing them to reproduce naturally in ponds. And grow. Third, the feeding tube adopts the method of simulating natural ecological farming, and cultivating and breeding natural food (zooplankton, benthos, snail, aquatic plant, etc.) with cheap fertilizer (chicken manure) and snail for free breeding and artificial feeding. Only as a supplement, a total of 2,000 kg of feed, such as 1,500 kg of bean cake, 1,000 kg of bran, 1,000 kg of rice bran and small weeds, were fed throughout the period. Feeding and fertilizing can be controlled flexibly according to the weather, water quality, the amount of natural food, the amount of cultured ponds, and the growing season. Take a patrol once a day, morning and evening, and add oxygen at any time depending on water quality, weather, and floating head conditions. In normal conditions, water is added 1 time per week. Each time the amount of water is added to the water in the pond, the water is usually injected into the pond 20-30 cm. The dissolved oxygen is sufficient, the water level is relatively stable, the transparency is about 35 cm, and the water quality is “Fat, live, tender, and cool. "The request. Every month, Quan Li splashed lime once to regulate the pH of the pool water. Fourth, disease prevention in the entire culture process, the fish species before soaking with 3% saline for 10 minutes, shrimp crabs stocked with 50 mg / elevated potassium manganate bath 2-3 minutes. During the growing season, the bait is fed once every half month (50 kg feed plus 25 grams oxytetracycline, twice daily, and fed for 3 days); in addition, the baits, tools, etc. are often sterilized with bleaching powder. Fifth, fishing for yellow earthworms, loach, green prawns, crawfish crayfish cages are used for a long period of time. The method of catching large and small animals is adopted. As long as they reach the market specifications, they must be sold; the crabs are formed after the “Chongyang†Festival and in the evening. Poolside pools are hand-captured and hand-held, combined with cages, until the end of November, dry pond fishing, Teng Tong for the next cycle to use.