First, the juvenile wintering management in the year of breeding time is generally only 2 months. The individual's growth rate is very limited, and their cold tolerance is far less than that of pups and adults. During the period of hibernation during winter, when the temperature of the incubation area in the nursery is reduced to minus 5°C, it can be killed by freezing. Therefore, it is necessary to strengthen overwintering management, for example, to feed a sufficient number of nutritious foods before winter, so that the juveniles can accumulate fat for winter. During the winter, the scaffolding can be covered with 20-30 cm thick straw, and the top of the pool is covered with bamboo curtains to create a suitable wintering ground for the larvae. According to the practice, adopting these measures is effective for ensuring safe wintering. Where conditions permit, when the outdoor temperature falls below 0°C, the young children can be transferred to indoor and concentrated in a wooden box covered with 30 cm thick moist sand, and then a layer of rice straw is kept warm on the sand. . When wintering in the house, rats and ants must be strictly prevented and the room temperature should be maintained at 0°C-8°C. The indoor nursery pool should be changed several times from 2°C to 8°C during the winter, and during the winter, the stocking density should be 100-250 per square meter.
2. The overwintering ability of young cubs and adult cicadas is relatively strong. The overwintering management is not strict with overwintering, and its safe wintering measures include:
1. Feed as much feed with high protein and fat content as possible before wintering, such as animal blood, internal organs, snail meat, carcasses, fish, shrimp, etc., to accumulate and store a certain amount of nutrients in the body.
2. The wintering pool should be chosen where there is plenty of sunshine, shelter, warmth, and a quiet environment. Disinfect with 20 ppm bleaching pond and expose the bottom of the pool for 2-4 days to avoid disease during wintering. There must be 20-30 cm deep mud in the center of the pool to allow the earthworms to lurk in the mud for wintering.
3, replace the pool water before entering hibernation, so that the earthworms live in fresh water for a period of time, in order to enhance physical fitness, during the winter, the pool water should not be in a static state for a long time.
4. The cubs reared for one year have strong adaptability to the environment and can naturally overwinter in the pool. The pool water level should be raised to more than 2 meters, and the environment around the pond should be kept quiet so as not to be frightened. The water escapes and flees to consume energy.
5. Applying some organic fertilizer on the side of the pond can, on the one hand, make fertilizer and water, on the other hand fertilizer fermentation can increase the pool water temperature. However, the amount of heaping should not be too much, so as to avoid decomposition of organic fertilizer and excessive consumption of oxygen in the pool water.
2. The overwintering ability of young cubs and adult cicadas is relatively strong. The overwintering management is not strict with overwintering, and its safe wintering measures include:
1. Feed as much feed with high protein and fat content as possible before wintering, such as animal blood, internal organs, snail meat, carcasses, fish, shrimp, etc., to accumulate and store a certain amount of nutrients in the body.
2. The wintering pool should be chosen where there is plenty of sunshine, shelter, warmth, and a quiet environment. Disinfect with 20 ppm bleaching pond and expose the bottom of the pool for 2-4 days to avoid disease during wintering. There must be 20-30 cm deep mud in the center of the pool to allow the earthworms to lurk in the mud for wintering.
3, replace the pool water before entering hibernation, so that the earthworms live in fresh water for a period of time, in order to enhance physical fitness, during the winter, the pool water should not be in a static state for a long time.
4. The cubs reared for one year have strong adaptability to the environment and can naturally overwinter in the pool. The pool water level should be raised to more than 2 meters, and the environment around the pond should be kept quiet so as not to be frightened. The water escapes and flees to consume energy.
5. Applying some organic fertilizer on the side of the pond can, on the one hand, make fertilizer and water, on the other hand fertilizer fermentation can increase the pool water temperature. However, the amount of heaping should not be too much, so as to avoid decomposition of organic fertilizer and excessive consumption of oxygen in the pool water.
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