1. Water level control. It is necessary to check whether there is any leakage in the overwintering pool. The crab pool cannot be in a low water level for a long time. The wintering pond should maintain a water depth of about 1.5 meters. The crabs will not be frostbite and frozen to death only in deeper water bodies. Otherwise, although hidden in caves or mud, crabs are still exposed to the air and will be frozen or frozen. When the water level is found to be falling, it is necessary to add water in time, and the temperature difference of the incoming water does not exceed 2°C.
2. Feed the bait. The crabs basically stopped after the snowstorm. When the ice melts, the amount of crab activity increases, and attention is paid to maintaining fresh water quality. When the water temperature rises to about 5°C, appropriate animal feeds containing high fat and protein, cooked wheat grains, and corn are added.
3. Daily management. A special person is required to take a tour of the pond, and the frozen pond surface should be broken in time to reduce ice, minimize the phenomenon of disturbing crabs such as boat trips, fish and shrimps, and avoid crabs from being snarled around and causing injuries and physical exertion.
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