Wintering management of special aquatic products

Wintering management of special aquatic products Loach: Loach is very sensitive to the change of water temperature. When the water temperature drops below 5°C, the loach will enter into the silt for winter and the wintering period will last for 2-3 months. During the wintering period, it is necessary to do a good job of preventing cold and heat and keep the depth of water more than 1.5 meters so that the water temperature is between 2°C and 8°C. In the paddy field, the loach should be concentrated in the fish slip before wintering, and the fish can be laid on the fish slips. The loach can infiltrate into the silt at the bottom of the fish to overwinter. Fertility Pearl: When the water temperature drops below I0°C, the frequency of cardiac pulsation in the river otters is small, and the amount of filtered water, oxygen consumption, and food intake are significantly reduced, and growth is almost stopped. It is not appropriate to apply organic fertilizer to the pool at this time, so as to avoid incomplete decomposition of organic fertilizer to produce a large number of toxic substances. Surgical lice and cubs should sink into the bottom of the pool for winter, and baboons that have just finished surgery should not sink into the bottom of the pool. Otherwise, they will contaminate the surgical wound and cause rot and rotten film. The quail is a cold-resistant animal, but it can also cause death if it is subjected to freezing. Therefore, do not allow the larvae to be exposed to cold during winter seasons, catching lice, and implants. Jubilee: The pool water should be deepened to 70 cm to 80 cm. The top of the pool should be placed with bamboo curtains. The bamboo curtains should be covered with straw insulation of 20 cm to 30 cm thick. Bullfrog: When the bullfrog goes into hibernation, it is important to keep the wintering pool quiet. During the hibernation period, the bullfrog relies mainly on the skin to breathe. The oxygen consumption rate is low, and the oxygen in the water can fully meet the wintering needs of the bullfrog. The temperature of the wintering pool cannot fall below 0°C and the water depth should not be less than 1.5 meters. In the fall, feeds with higher fat content are required to accumulate more nutrients in the body, which is conducive to wintering. Huang Xin: There are two kinds of wintering methods for Astragalus membranaceus: One is to bring water to winter. Generally, water is 10 cm to 20 cm. When the water temperature is below 6°C, the astragalus can sneak into the depths of the bottom of the pool to overwinter. The ice on the water can also play a role in keeping warm. When the temperature is high, the eel can breathe out and eat predatory in the hole during the day. The second is the winter of drainage. That is, before the winter, the pool water will be drained to keep the soil in the pond moist. Before the freezing cold weather arrives, a layer of straw, straw bales and other things will be covered on the pool surface to keep warm and prevent freezing. It should be noted that during the hibernation of jaundice, although it is in a dormant state, there is still a weak respiration, so it is not appropriate to accumulate heavy objects on the pool. Crabs: Overwintering crab species should be physically strong, uniform in size, and free from disease and injury to keep the depth of wintering pool above 1.5 meters to maintain a higher water temperature. If the water level is too shallow, water must be replenished in time to prevent the crab species from being frozen and frozen to death. If the water quality is too fat, it must be replaced in time to prevent the death of crab species. If the weather is warm and sunny during the winter, and the water temperature is above 4°C, the crab species will eat a small amount and can feed a small amount of chopped small miscellaneous fish, shrimp, snails, oysters, oysters, etc. to supplement the nutrition and prevent excessive consumption of the crab constitution. And died. Splash lime every 20 days during winter to increase water body calcium, disinfect water body and prevent crab disease.

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