The key technology of polyculture

There are 35 professional farmers and 550 mu of intensive water surface in the Wangjialuo Fishery Field, Gaojimiao Town, Shishou City, Hubei Province. They are using their own way to fish, and adopt a polyculture mode of fish and fishery. The per capita income is more than 20,000 yuan per year. Only an average of 4,000 yuan to 5,000 yuan in revenue per turtle per mu can be increased. The Wangjiao Fishery Farm has thus become a banner for local farmers to get rich thanks to the new breeding model. Today, around the standardized fish ponds lined up neatly in this field, people can enjoy the excitement of the scene.

In recent years, the number of wild turtles has become less and less. Therefore, the soft-shelled turtles that are sold on the market are mainly cultivated in greenhouses. However, these soft-shelled turtles have lower nutritional value than wild turtles, and they are not popular with consumers because of their high breeding density and use of drugs. . The polyculture of turtles cultured in ponds has substantially preserved the appearance, taste and nutritional value of wild turtles. Although the price is equivalent to more than twice the cost of factory-cultured turtles, it still has a large market demand. The fisheries fishermen based on Li Xingui mainly look at this point, and from 2003 onwards, they gradually raised turtles in intensive culture ponds to implement polyculture. The turtles raised in this way do not need to cast another one. Feed, low cost, high prices, aquaculture efficiency is much higher than the factory culture.

At present, all the Chengyu products produced in the market are widely sold in Shanghai, Jiangsu, Zhejiang and other markets, and have been favored by many consumers.

In the face of aquaculture farmers who come to “acquisition”, Wang Jia’s fishermen always happily introduce two experiences:

The first is to focus on the stocking density. One mu of fish ponds is suitable for 50 to 60 turtles, annual production of 30 kg to 50 kg of commercial turtles, not the income of fish farming, the average net profit of single soft-shelled turtles per mu is 4,000 yuan to 5,000 yuan, not only improving the breeding efficiency, It also greatly reduces the risk of raising individual fish or turtles.

The second is to focus on matching fish species. Fish, alfalfa polyculture, can still feed filter-feeding salmon, trout and grass carp, trout and other adult fish. The stocking size of each mu of water is about 500 centimeters larger than 20 centimeters, including 200 to 300 tails of chain fish, 60 to 100 tails of grass carp, 50 to 70 tails of carp, 50 to 70 tails of carp. The key targets for daily feeding are grass carp, carp, and carp. In addition, live snails of embryos can be placed in a polyculture pond. That is, from the end of April to the beginning of May of that year, 300 kilograms of snails will be released per acre of water, which will multiply new snails. 150 kilograms, continue to serve oysters.

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