First, narrow the temperature difference. 2 hours after the crab leaves the car, pour some water from the pond and pour it on the crab seedlings, or put the crab seedlings in the water and put it in the water. Repeat this 3 to 4 times to make the crabs suck enough water to adapt to the new environment. At the time of release, care should also be taken not to pour the crabs directly into the depths of the pond.
Second, adjust the water quality. Before stocking crabs, check whether the water pH, dissolved oxygen, and other indicators meet the growth requirements. For ponds and intensive fish ponds that were originally used for fry cultivation, 5 to 10 kg of calcined water should be sprinkled every 2 to 3 days before the release of crab seedlings.
Third, clear the enemy. Usually pay attention to clean ponds harm. For larger water areas that are not easily clear ponds, it is necessary to remove enemy predators manually. Put the crabs into the pond for 1 to 2 weeks to find out the enemy and use a small fishing net to catch them.
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