Comprehensive fish farming is the use of a variety of management, comprehensive utilization of fish farming, is an energy-saving, low-cost, high-yield, high-efficiency fish farming methods. Taking fish farming as a center, at the same time, agricultural, forestry, animal husbandry, and industrial secondary production are carried out, and by-products and wastes are used to raise fish, so that the use of materials and energy can be recycled, with significant social, ecological, and economic benefits. The key to comprehensive fish farming is to adapt to local conditions, rational layout, and effective deployment. Fish-duck combination. Generally, some old ponds are used to fence the ponds or ducks on the surface, and the density of ducks is 3-4 per square meter. A duck produces 40--50 kg of feces per year and can be converted into 2--3 kg of fresh fish. General mu water surface with 100-200 ducks or 100-120 meat ducks, the feces or splashes of feed can produce fresh fish 200-300 kg. Fish-pig combination. The main configuration methods include the construction of a pig-side pig house and the concentrated pig rearing outside the pond. 1 The pig can produce 2000--3000 kg of excrement from 8 months of raising, and it can produce 50 kg of fresh fish. Generally, the ponds with fertilizers and feeds for fish farming are used. Each mu of water should be equipped with 2-2.5 pigs. If pigs are used only for fish breeding, the water should be raised for 4-5 days per mu. Fish - chicken geese combined. Chicken manure fish, generally 5 kg of chicken manure can produce 1 kg of fish. Provide 150-200 chickens per acre of water. In combination with fish and geese, a geese can produce 120-150 kilograms of feces per year, which can be converted into 5 kilograms of fish, and 50-60 geese can be raised on 1 mu of water. The fish-grass combination generally uses ponds, pond slopes, and feed to grow sudangrass, ryegrass, and other feeds to feed fish. Each mu of water allocated 0.3 mu of feed land, plus manure and other feed, can produce more than 500 kg of fish.
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