Stick to feeding
The high temperature of the water causes the fish to be unable to hibernate, and the activity and metabolism of the fish necessarily consume a certain amount of physical energy. Adherence to feeding is not only a supplement to the body's energy, avoiding the loss of fish, but it also promotes the growth of fish and prolongs the growth cycle of fish by warm winter.
Feeding method. In order to protect the fish from frostbite, it is carried out at 12 o'clock to 14 o'clock on a sunny day when the temperature is higher than 8 oC, and it is fed once a day. The amount of feed is 0.5%-1.0% of the fish in the pond. Feed ingredients to reduce protein content, increase fat, carbohydrate content, increase vitamin c, e content, in order to enhance the fish's physical fitness and anti-stress ability.
Adjust water quality
Every warm winter climate, usually with little rain and snow, should be filled with fresh water in a timely manner, not only to maintain the water level of 1.0-1.5 meters of fish ponds, but also to improve the transparency of water bodies, promote photosynthesis, and optimize water quality. However, each injection should not exceed one fifth of the original water body. In order to avoid excessive water quality, the water temperature changes too much.
Fish disease prevention
The principle of prevention and control of fish diseases by combining prevention and control with prevention is more important in the winter, because the low water temperature in the winter leads to poor efficacy of water disinfection and it is difficult to achieve the desired results. At the same time, fish have low appetite and low food intake. Oral medications are more difficult to treat fish diseases. Therefore, fish diseases in winter must be "prevented".
Aquatic mildew
Low temperature is the dominant condition of the disease-sweetew and M. edodes breeding. It is the epidemic season of the disease in late winter and early spring. Body surface injury is the main infection route of the disease. Warm winter weather will undoubtedly prolong the epidemic of the disease and increase the chance of infection. Therefore, it is necessary to prevent the body from being injured. If fishing or special circumstances cause damage to fish, try to place a holding pond. If there are no conditions for the holding facilities, the injured pond fish should be soaked in salt water with a concentration of 3%-5% and then returned to the original pond after 5 minutes to 10 minutes.
Trichophyton poisoning
Because of the leakage of ponds, natural evaporation, and the lack of rain and oligokiness, the salt content of pool water is relatively increased. Especially in salt-alkali ponds, it is easier to make Trionyx viridis become an dominant population, causing pool fish poisoning. Specific prevention methods: In addition to timely addition of new water, regular topdressing urea or ammonium bicarbonate. Once a month, each time, the use of urea 3 kg -5 kg ​​per mu, ammonium bicarbonate 7 kg -10 kg, after the dissolution of Quanchiposa pool, strengthen the cultivation of other algae, become dominant populations, inhibit the breeding of algae, so that it is always in Disadvantaged population. Spill time is between 10 o'clock and 14 o'clock on sunny days.
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