First, put in large-scale fry early to catch fish. In general, the price of grass carp is relatively high before September. For example, before September last year, the price of Jiangxi fish was 5.2~5.3 yuan/kg (about 2 kg/tail); However, it fell after 65438+ 10, and 165438+ 10 fell to 4.4~4.5 yuan/kg. In order to catch fish early, some farmers change their breeding ideas. For example, in a certain place, most farmers put in 1~2 seedlings, but a farmer switched to 4 seedlings (about 80 acres of water), and the time for throwing seedlings was earlier. The fish species collocation patterns are: grass carp 800/ mu, Xiangyun crucian carp 100/ mu (8 fish/kg) and carp. Farmers have been using high-grade feed and feeding small fish feed in the early stage of seedling casting. The first batch of grass carp was caught on June 8th last year, with the specification of 1.6~ 1.8 kg/tail.
Second, grass carp mixed culture of high-density crucian carp, using grass carp feed+fertilization A farmer started to engage in four major fish farming very early. Although I have made money every year in recent years, the profit is not high. Since last year, he has changed the tradition, mainly raising crucian carp and grass carp, and mixed feeding filter-feeding fish. The water surface of this farmer is 1.20 mu, and since February of 20 10/00,000, grass carp 0. 1 kg/tail, white crucian carp 0. 1 kg/tail (Xiangyun crucian carp) and 0.2 kg/tail have been put in. By the end of last year (1 1), * * had sold grass carp10/kg, crucian carp 82,574 kg, silver carp 25,894 kg and bighead carp 3021kg, excluding all costs. Mainly based on the water quality conditions, fertilization saved a lot of costs, and last year, the price of crucian carp was high (the lowest price was 8 yuan/kg), and the profit increased. Even if the price of grass carp is low, this model can obtain good economic benefits.
Third, to increase the output of bighead carp, the price of grass carp is still relatively low among the prices of various aquatic products. In order to get a good income, farmers often strive to increase the output of bighead carp, silver carp and other fish farming. 20 16 a farmer adopted the mixed culture mode of grass carp (70%) and bighead carp (30%), feeding grass carp fingerling feed in the early stage, and adopting the mixed culture mode of grass carp adult fish feed and bighead carp feed in the later stage. In the process of culture, the maximum feeding amount of bighead carp does not exceed 65438 0%, and the fish grows rapidly, with a yield of 452 kg/mu and a contribution of nearly 2000 yuan per mu. Because bighead carp will eat fish feed, which is very helpful for its early rapid growth; Moreover, in the later period, farmers used hanging bags to supplement some bighead carp feed appropriately, so that the bighead carp yield was higher.