Aquaculture farms respond to cold currents

1. Keep abreast of the meteorological information and the degree of disaster that may be caused by the cold current.

2. Understand the extreme temperature conditions of cultured objects, such as temperate fish (Tilapia, freshwater whitefish, Macrobrachium rosenbergii, Penaeus vannamei, carp, snapper fish, spotted grouper, oblique band Stone spot, gentian stone spot, tiger spot, etc.) The most suitable water temperature for growth is generally at 25-30°C, and the lethal temperature is below 10°C (usually less than 7°C for a long time).

3. Should pay attention to strengthening cultivation before winter, more feed concentrate, let the fish eat, in order to accumulate fat, enhance the ability to protect the cold.

4. Attention should be paid to insulation. Conditional breeding sites can inject thermal water and groundwater insulation. Farmers can increase the water level, adjust the pool water and fertility, establish greenhouses and other methods for thermal insulation. All breeding ponds, especially seedlings in the wintering pond, should raise the water level as much as possible, but the water temperature for injecting new water cannot be too different from the water temperature of the original pond, that is to say, it is better to add water when the water temperature is high at noon; (Adjustment) The fatness of pool water, the transparency should be less than 35 cm to facilitate insulation. White penaeid shrimp breeding pool must be covered with greenhouse insulation, there is no scaffolding white shrimp to be immediately listed. Freshwater white plover, tilapia and other tropical fish seedlings pool, conditional also have to take the insulation shed. The grouper factory nursery ponds should be warmed by boilers. In the seashore industrial aquaculture (such as abalone, gingiva, etc.) on the one hand to strengthen the indoor insulation measures, on the other hand should pay attention to changes in the water temperature of the sea, when the temperature is low and the water temperature of the sea area is higher than the temperature of the culture species to adapt to the lower limit , can increase the amount of water flow; when the water temperature in the sea area is lower than the lower temperature limit, reduce the amount of water flow, and take appropriate artificial temperature increase measures.

5. It is necessary to increase the aerator in time to increase the oxygen content of the pool water and prevent frostbite in floating heads. Heavy snowfall, low temperature weather, low atmospheric pressure, dissolved oxygen in the pool water will fall, and the surface temperature of the pool water is low and the bottom temperature is high, which can easily cause convection in the pool, causing humus in the bottom of the pool to turn up, accelerate decomposition, consume large amounts of oxygen, and cause Aquatic animals suffer frostbite or suffocation from floating heads, so oxygenation should be performed in time.

6. Before and after the arrival of the cold current, avoid pulling and catching and minimize mechanical damage.

7. After a strong wind has cooled down, the water layer should be gradually deepened to prevent and cure diseases. Fish should be cleared of fish ponds in time after being frozen to remove dead fish to prevent the occurrence of watery mildew.

8. Once fish farmers have found frostbite and watery mildew disease, they should promptly adopt drug control, such as the use of water and mildew net Quanchiposa, the amount of water per 100 meters per mu per meter, for three days; or sulfide sulfide Quanchiposa, the amount of water per mu per meter of 100 to 200 grams.

9. Pay close attention to grabbing aquaculture objects that still have value in use, stepping up sales on the market and recovering economic losses.

10. It is necessary to promptly repair the damaged facilities and make up for the appropriate specifications.

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