Select Pool
The pond is nearly square, surrounded by 8 meters wide and 0.6 to 0.8 meters deep. The beach surface can lift water to 1.2 meters. The bottom of the pond is sandy soil with less silt. The water quality is good. The water injection and drainage facilities are complete. Small wooden boat - bar 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, leak-proof, and use asbestos tiles to prevent escape. 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, let it reproduce naturally.
Seedlings
Fish species: After rearing clear ponds, there are about 200 kilograms of heterotrophic silver carp, which is about 20 fish per kilogram. In the middle and late periods, due to the overgrown aquatic plants, grass grasses were released to control aquatic weeds and put a total of 400 kilograms, an average of 8.6 kilograms per mu.
Green shrimp: After clear ponds, young prawns can be reared, ranging from 3 kg to 5 kg per mu, or about 50 pounds of broodstock per kg before and after April, with an average of 0.5 kg per mu.
River Crabs: Before the month of May, about 80,000 to 90,000 “bean crabs†were raised with 1,000 or so larvae per kg.
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.
Feeding tube
Adopt natural ecological breeding methods to cultivate and breed natural foods (plankton, benthos, snails, aquatic plants, etc.) with cheap fertilizers (chicken manure) and snails for free feeding by farmed animals. Artificial feeding is only a supplement. During the whole period, a total of 2,000 kilograms of soybean meal, 1,500 kilograms of bran, 1000 kilograms of bran, 1,000 kilograms of rice bran and small weeds were fed. 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 once a week. Each time the amount of water is added to the pond as a result of water erosion, the general water injection is 20 centimeters to 30 centimeters. The dissolved oxygen is sufficient, the water level is relatively stable, the transparency is about 35 centimeters, and the water quality is “fat, live, tender, Shuang's request. Every hour, Quanchipa splashes lime to adjust the pH of the pool water.
Disease prevention
During the whole culture process, the fish species were soaked with 3% saline for 10 minutes before stocking, and shrimp crabs were stocked with 50 mg/up of potassium manganate for 2 minutes to 3 minutes. During the growing season, the bait is fed once every two weeks (50 kg of feed plus 25 grams of oxytetracycline, twice a day, for 3 consecutive days); in addition, baits, tools, etc. are often disinfected with bleach.
Fishing
Astragalus, loach, penaeid shrimp, crayfish crayfish 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 pool. The fishermen will be caught in freehand and combined with cages until they reach the end of November for fishing in dry ponds and Tangtang will be used for the next cycle.
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