Grasping ponds to transform the use of ponds in the winter season to transform ponds, ponds changed to small ponds, shallow ponds to deeper ponds. After transformation, it can increase the water capacity of the pond and also improve the pond environment. The well-conditioned ponds also need to be renovated, and the pool water should be drained. After sun exposure, the thick silt should be dug and the weeds should be removed to raise the height of the pond.
Disinfect ponds and ponds for disinfection should be disinfected with drugs. Commonly used disinfection products include quicklime, bleaching powder and so on. However, lime disinfectant works best. It can also play a role in fertilizer application. Clear pond disinfection should be selected on sunny days. The dry pool disinfection uses 100 to 150 kg of lime per acre, or 10 kg of bleaching powder. After the water is dissolved, the entire pond is splashed evenly.
Fertilizer water quality is sterilized by fertilization after 5 days to 7 days after disinfecting the fresh lime pond. Put basal fertiliser with fermented chicken, pig, cow dung 200 kg ~ 300 kg, or fertilizer 50 kg to fertilize pool water, increase the water bait creatures, to meet the needs of fish species can eat.
Reasonable stocking should be based on the past year's stocking experience and the pond's fertilizer and water supply conditions and feeding methods to determine the appropriate number of stocking and the proportion of fish. The traditional stocking modes include: stocking of large-scale fish species, stocking 100 to 150 fishes per mu, 20 to 30 fishponds, 200 to 300 grass carp, 500 carp, or 150 white carp. 200 tails, 25 heads of flower buds, 100 to 150 tails of grass carp, and 1000 tails of carp.
The early release of fingerlings in fish stocks will enable fish to adapt to the new living environment earlier, eat earlier and grow earlier, and relatively prolong the growth period. Generally from the winter solstice to the beginning of spring is the best period for stocking fish, because during this time the temperature and water temperature is relatively low, the scales of the fish close, fishing and stocking operation is not easy to damage the fish, can reduce the incidence of fish species and mortality. The fish species should be selected to be carried out on a sunny or cloudy day when the temperature is not too low. It is easy to freeze the fish body due to the low temperature of the rainy days or the freezing of snow and windy weather. It is not suitable for stocking.
The qualified fish species for the quality of fingerlings are important conditions for high yield and stable production of adult fish. The size of stocked fingerlings should not be too small, and generally requires one-year-old fingerlings. The head of fish has a small back, a body of stout manure, a full-scale fins, a lively swim, a distinct body color, and no disease or injury.
Fingerling disinfection and immunization of fish ponds should be immersed in the drug disinfection time, time 5 minutes to 10 minutes. Drugs are potassium permanganate 30 g / cubic ~ 40 g / cubic water, or salt 3% to 4%, or trichlorfon 8 g / cubic water. Grass carp and other fish species can be injected vaccine immunization better.
Feeding management As the saying goes, “three-point stocking and seven-point management†are used. After the fishes get out of the pool, they need to deepen their anti-freezing in case of cold weather. When the sunny temperature is high, some fodder should be properly fed to ensure the fish’s food needs. In order to promote growth, we should adhere to the patrol pond at ordinary times, which is conducive to early detection of problems and timely resolution. In short, as long as the management of a pond water, will be able to raise a pond fish.
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