Raising two seasons of fish a year in the same pond and fish, raising fish in the first half of the year, and raising fish species in the second half of the year can increase utilization of fish ponds and increase economic efficiency.
I. Fish pond conditions
It is required that the area of â€‹â€‹the fish pond be suitable and the depth be appropriate. In order to facilitate net fishing and dry pond fishing, generally choose an area of â€‹â€‹3 to 15 acres, depth of 1.5 to 3 meters of fish ponds. It requires sufficient water sources, convenient drainage and irrigation, and convenient transportation. It is important to raise two seasons of fish in one year because fish species, fertilizers, feed, and adult fish enter and leave frequently, and the labor intensity is high.
Second, the production process
For the first quarter of the year, fish were released from January to February. Feeding was enhanced from March to June, and fish were sold in June. After the season of July 15th, the fish of the summer season will be put into use, from August to October, it will be intensively cultivated, and from November to December, the fish will be sold at the end of the year.
Third, adult fish breeding
1. Fish stocking: Disinfection in clear ponds 15 days before stocking. The base fertilizer was applied 3 days later. Fish species require the same specifications, robust physique, no disease or injury, and mainly eat large-scale fish. Each acre stocking rearing weight of 200 to 500 grams of grass carp 250, tail weight of 200 to 500 grams of carp 100, tail weight 50 grams of 100 species of carp. When stocking, soak the fingerlings and inject the vaccine.
2. Strengthen rearing: promote early eating, feed the fish with high-quality pellet feed after feeding, and enter normal feeding by early March. Feeding twice a day from April to June, the amount of fish fed is 3% to 5% of the fish's body weight, and appropriate amounts of green grass such as tender grass and lettuce leaves.
3. Regulation of water quality: The reduction in the transparency of the water should be filled with new water in time, regulate water quality, increase the amount of dissolved oxygen in the pool, and maintain a water clarity of about 25 cm. If necessary, add an aerator and turn on the oxygen for 1 to 2 hours at noon on a sunny day.
4. Strengthen fish disease prevention and control: Mainly prevent and treat diseases such as red skin disease, gill disease, enteritis disease, and surface parasitic diseases. Adhere to the main prevention, once a month water disinfection. Feed the bait every 15 days.
Fourth, fish breeding
Thoroughly clear the pond to disinfect the wild fish before applying the fish, and apply enough basal fertilizer. Fish breeding, soaking and disinfecting operations must be careful to prevent injury. 7 centimeters per mu are stocked with 3000 grass carp species, 5 cm species of carp species are 500 species, and 3 cm species of carp species are 100 species (which can be cultivated in that year). Feeding is mainly pelleted feed. From July to October, the amount of daily feed during the intensive cultivation is 8% to 10% of the fish's body weight and it is fed 3 times a day. Fertilization is dominated by organic fertilizers to keep the water quality â€œfat, live, tender and coolâ€. Common diseases of grass fingerlings are bleeding and surface parasitic diseases. With bleeding loose, rare earth fish mixed feed to prevent bleeding. Use exterminator once a month to kill parasites.
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