1, set up a winter shed. Do not rush to cover all the plastic film in the overwintering shed. Wait until the water temperature drops to 20°C (Macrobrachium rosenbergii) and 16°C (Penaeus vannamei). The construction of the wintering shed should be based on the principle of practicality and low cost. Except that the plastic film needs to be replaced every year, other materials can be used continuously for 2-3 years.
2. Maintain good water quality. Since it is not possible to change water frequently during the winter, maintaining good water quality is the key. The main technical measures are: 24 hours continuous increase of oxygen by placing a plastic pipe with many small holes on the bottom of the pond and connecting it to a blower outside the shed. This oxygen increase method has low cost and good effect; it is applied once every half month. Beneficial bacteria, degradation of ammonia in water, reduce the formation of nitrite and other harmful substances; winter water temperature low shrimp eat less, residual bait too easy to accelerate the deterioration of the water body, so to control the amount of feed; in the outside temperature increased At this time, it is necessary to promptly open the ventilation of the sheds, and if the water temperature is appropriate, new water should be replaced appropriately.
3, timely harvest. The longer the wintering time, the greater the chance of breeding accidents. Therefore, it is necessary to obtain market prices, especially during the Spring Festival.
2. Maintain good water quality. Since it is not possible to change water frequently during the winter, maintaining good water quality is the key. The main technical measures are: 24 hours continuous increase of oxygen by placing a plastic pipe with many small holes on the bottom of the pond and connecting it to a blower outside the shed. This oxygen increase method has low cost and good effect; it is applied once every half month. Beneficial bacteria, degradation of ammonia in water, reduce the formation of nitrite and other harmful substances; winter water temperature low shrimp eat less, residual bait too easy to accelerate the deterioration of the water body, so to control the amount of feed; in the outside temperature increased At this time, it is necessary to promptly open the ventilation of the sheds, and if the water temperature is appropriate, new water should be replaced appropriately.
3, timely harvest. The longer the wintering time, the greater the chance of breeding accidents. Therefore, it is necessary to obtain market prices, especially during the Spring Festival.
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