A small grass carp "ran" out of the way to get rich.

Over the past few days, workers from Longyoulong and Fishery Park have successively thrown more than 100,000 fishermen into the newly built "runway". The "runway" for fish exercise is located in the center of 50 mu fish pond, 8 culture tanks 22 meters long, 5 meters wide and 2 meters deep. Fish barriers are installed at both ends of the culture tanks lined up in a row. The "water pushing and oxygenation" device in the north circulates the water on both sides for 24 hours, while the sewage suction device in the south collects fish dung residue at all times. The grass carp in the tank compete to swing their tails against the current. The splashing water surface is full of dense black backs and dazzling spray thrown by fish tails.

"This farming model was designed by Auburn University in the United States and introduced through the American Soybean Export Association. It's called circulating water fish farming in ponds, also known as 'track fishing'." Zhang Shuangqi, head of Longhe Fisheries, said that 25,000 grass carp can be put into each tank, which can raise two rounds a year, with an annual output of 400,000 jin grass carp, four times the yield of the original 50 mu fish pond. "The fish 'captive' is constantly moving in the tank. The lines are beautiful, the body is good, the quality is better, and the price is higher. The annual output value of the eight 'racetracks' exceeds 3 million yuan."

Small bodies of water raise fish, large bodies of water raise water. Zhang Shuangqi introduced, Push water oxygenation let a pond still water move up, The fish dung and residual feed produced in the breeding process, Along the circulating water flow into the sewage suction channel, About 80% can be recycled into organic fertilizer, The remaining 20%, By the already built fish pond bottom sewage system collection and utilization, The whole process zero water outside the body drainage. In addition, the fish pond raised silver carp, silver carp and other filter-feeding fish, as well as plankton and aquatic plants to further purify the water quality.

Yu Jin, head of fishery department of Longyou County Water Conservancy Bureau, said that clear water fish farming is friendly to the external environment, but the economic benefits are greatly reduced."Runway fish farming" is scientific and environmental friendly, which not only makes the fish pond itself efficiently purified, but also greatly improves the breeding density and quality of fish, doubling the benefits, realizing win-win ecological benefits and economic benefits.

Novel fish farming model, but also let Longhe aquaculture professional cooperatives more than 100 fish farmers eager to try. A few years ago, Wang Zhiyin, a fish farmer in Baima Village, Mohuan Township, rented more than 40 mu of pond for fish farming, but he couldn't even pay rent. After joining the cooperative, technicians taught him the techniques of disease prevention and control, rotation of catch and release, sewage discharge at the bottom of the pond, etc. The adult fish was put on the market at the wrong time. In that year, he earned nearly 200,000 yuan. He not only repaired the house, bought a car, but also increased the sales business. At present, Wang Zhiyin's breeding water surface has expanded to more than 100 mu, driving more than ten villagers to become rich together. They are very optimistic about the development prospect of "track fish farming".

It is understood that at present, the fishery output and output value of Longyou County account for 1/3 and 1/2 of Quzhou City respectively. The mature and efficient breeding and sales mode of Longhe fishery has positive reference effect on promoting fishery efficiency and increasing income of agriculture and fishery, and is also a good channel to accurately help low-income farmers. Zhou Xiaoping, director of the poverty alleviation office of Longyou County, said that in April, the poverty alleviation office will take out special funds as shares of low-income farmers into Longhe fishery; no less than 10% of fixed dividends will be given every year to subsidize low-income families.