Several different models of integrated fish farming technology The integrated culture of fish can recycle wastes, make full use of local resources, and maintain ecological balance. It is a mode of water conservation, land saving, energy conservation, grain saving, and low consumption and high efficiency. Here are the brief introductions of several models for comprehensive fish farming in Wannian County, Jiangxi Province: (a) Three-dimensional culture of fish, earthworms, livestock, and poultry is based on the water surface, fisheries are the center, fish farming in the water, pearls on the water surface, underwater (Cage) Raising quails, ponds to build pigs to raise ducks or raise geese, livestock and poultry excrement into pond water, transform or plankton, to provide natural food for fish. Livestock and poultry manure have comprehensive nutrients, high levels of nutrient elements such as nitrogen, phosphorus, and potassium, and are mixed with a large amount of feed and undigested feed that are spoiled by livestock. Therefore, the livestock and poultry manure fish has obvious effects. The ratio of comprehensive fish farming is generally 400-450 fish ponds per 0.067 hectares of ponds, 1,000 or so nourishing pearls, 3000-4000 young oysters, 7 healthy pigs, 20 ducks, and 150-200 fish per year. Kg, pearl 2-3 kg. (b) Fish-agricultural integrated fish farming generally uses terrestrial forage for land, pond, and sporadic land. Currently, ryegrass and Sudan grasses are more common in terrestrial forage crops. Aquatic feeds include water hyacinths and water lettuces. Land grass such as water and fertilizer management is appropriate, the annual production of grass can be about 8000 kg, according to the calculation of the feed coefficient, can produce about 450 kg of grass-eating fish. (3) Fish-livestock-farm combination This model includes pig-grass-fish and vegetables-pig-fish. Pig manure is used as a fertilizer for growing grasses. The production volume is relatively high. The primary productivity of every 0.067 hectares of weeds is 2-2.5 times the productivity of phytoplankton. According to the experiment, direct feeding of fish per 100 kg of pig manure can make the filter food and omnivorous fish proliferate 2.5 kilograms. For planting grass, it can produce 1.2 kilograms of terrestrial grass, can produce grass carp, 4.2 kilograms of head pupae, and can bring filtration, 1.5 kilograms of omnivorous fish, and 5.7 kilograms of fish in total, which is 3.2% more than pig manure. Kilograms, an increase of 133%. According to experts, the use of chicken manure fish can also prevent fish pond leakage, the average leakage reduced by 54% -76%, because the chicken manure debris deposition can evenly plug the bed soil gap. Using fish - a chicken, fish - ducks, fish - pigs, fish - cattle and other livestock and poultry integrated breeding, can effectively prevent leakage of fish ponds. (d) fish - mulberry or fish - fruit combination of mulberry mulberry sericulture, silkworm sand, silkworm pupa and cocoon water fish, pond mud mulberry, so Baisha and pond mud are fully utilized. During the fall time of fruit and leaves, ryegrass or vegetables can be grown as fish feed and pond mud as fertilizer. It is estimated that 2000 kg of mulberry leaves will be harvested per 0.067 hectare of mulberry, 17.5 kg of silkworm and 1200 kg of larvae for silkworm rearing, and about 1 kg of fish may be converted to about 38 kg of silkworm sand. In addition, ryegrass or vegetables can be grown for 3,000 kg per 067 hectares of mulberry fields in winter. Every 0.067 hectares of mulberry sericulture, producing more than 130 kilograms of silkworm cocoons, can convert 1 kilogram of fish. (5) The agricultural and sideline products processing and aquaculture industry combined with agricultural and sideline products include oil mash, food grains, soybeans, alcoholic drinks, and soy sauce. These processing industrial waste residue is a good feed for pig raising pigs. Ikechi's economic crops and grain and oil crops provide raw materials for the processing industry. Bran and rice bran are the waste residue of the food processing industry. It is a good feed for raising fish and raising pigs. Ikechi's economic crops and grain and oil crops provide raw materials for the processing industry. Bran and rice are the by-products of the food processing industry. They have a wide range of sources. They contain a certain amount of protein, fat, and more carbohydrates, but they also contain a wealth of vitamin B, which is of great value as a feed for fish farming. Distiller's grains are residues of the brewing industry. The contents of major nutrients are small, but they often contain more water-soluble vitamins and minerals and can be used as additives in feed.
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