First, catch fish. As the temperature of the water decreases, the ingestion intensity of the fish is greatly reduced, the growth rate is also slowed down, and most of the fish have reached the catching specifications. At this time, fish farming households should pay attention to the preparations for the repair of gears, overhaul of transportation tools, and market sales surveys, and timely arrest of common fish such as carp, carp, grass carp, herring, carp, and bonito. , seize the time to market sales.
Second, dredging repair pond. In winter, due to the low water level in the pond, most of the empty ponds have no fish. It is a good time for the desilting, dressing and transformation of aging ponds. The method of dredging is to drain the pool of water first, and then artificially or mechanically dredge the frozen pond. Ponds with better conditions must also be renovated and remodeled. The pool water can be drained and the thick silt can be dug up to expose the sun to the bottom of the pool. This will not only kill pathogens and wild fish in the silt, but also promote the bottom of the pond. Quality improvement. At the same time we must eradicate weeds and raise and reinforce the ponds. After the pond has been modified, it can not only increase the water capacity of the pond, but also improve the production conditions of the pond and greatly increase the production potential of the pond.
Third, the pond disinfection. Renovate and reconstruct a good pond to use drugs for disinfection. Commonly used antiseptics include quicklime, clear pond spirit, and bleaching powder, among which quicklime has the best disinfection effect. Pond disinfection should be performed on a sunny day. The water depth of the pond should be maintained at about 10 cm. After the 50-80 kg of water per acre is used, the whole pool is splashed.
Four, and pond winter. In order to facilitate the daily management of the winter season, conventional fish seedlings should be treated in ponds. Fish species and ponds generally choose water temperature at 8 °C ~ 10 °C. In order to prevent the fish from getting hurt, prevent the fish species from infecting various surface infectious diseases. Under normal circumstances, 20,000 to 30,000 species of 10 to 12 centimeters can be stocked per mu of water.
Fifth, daily management. When the pond's water temperature drops below 8°C, the fish enters the wintering period. During the wintering period, fish rarely ingest or stop feeding, the amount of activity is significantly reduced, the level of metabolism is reduced, and the growth rate is slowed. However, we cannot relax the day-to-day management of fish as it enters the wintering period. As the disease resistance of fish declines significantly during the wintering period, it is necessary to do a good job in the daily management of pond wintering. Each morning, evening, and evening, the ponds are inspected once and the changes in pond water color and fish activity are observed.
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