Huang Yi's winter four methods
2018-04-24 16:00:55
1, with water overwinter method. Astragalus is a variable-temperature, cold-blooded fish with a strong adaptability to the environment. When the temperature drops below 10°C (growth temperature is 15°C to 30°C), it rarely feeds and hibernates at the point. At this time, for the safe wintering of the astragalus, the pond should be cultured. The water level is increased to 30-50 cm, ensuring that the water temperature at the bottom of the pool is above 0°C in winter. If the pond is frozen, the ice must be opened every day to prevent hypoxia.
2, dry pool winter law. In winter, water temperature below 10°C drains the pool water to ensure that the bottom of the pool is moist. A layer of straw or wheat straw or corn stalk is covered on the surface of the pool's soil. The thickness is 10 to 20 cm. The temperature in the north is cooler than the south, and the thickness of the cover grass is 30. In centimeters, it can also safely pass winter.
3, indoor wintering method. When the temperature is below 10°C, transfer the pond yellowtail to indoor wintering. In the indoor pool or bucket, add 1 kg of astragalus and 2 kg of water to the tank or bucket and change the water once a day. The room temperature is between 2 and 5°C.
4, plastic greenhouse wintering method. When the winter water temperature reaches 12°C, the use of plastic greenhouses is also effective for wintering. When the plastic greenhouse is used for winter, the water level of the pond is slightly higher than the aquaculture water level. The temperature in the shed is guaranteed between 2 and 8°C. When the temperature is highest at noon every day, the ventilation holes of the greenhouse are opened, so that the air in the greenhouse is fresh, and ventilation holes are installed at the top of the greenhouse to prevent the death of jaundice due to lack of oxygen.
2, dry pool winter law. In winter, water temperature below 10°C drains the pool water to ensure that the bottom of the pool is moist. A layer of straw or wheat straw or corn stalk is covered on the surface of the pool's soil. The thickness is 10 to 20 cm. The temperature in the north is cooler than the south, and the thickness of the cover grass is 30. In centimeters, it can also safely pass winter.
3, indoor wintering method. When the temperature is below 10°C, transfer the pond yellowtail to indoor wintering. In the indoor pool or bucket, add 1 kg of astragalus and 2 kg of water to the tank or bucket and change the water once a day. The room temperature is between 2 and 5°C.
4, plastic greenhouse wintering method. When the winter water temperature reaches 12°C, the use of plastic greenhouses is also effective for wintering. When the plastic greenhouse is used for winter, the water level of the pond is slightly higher than the aquaculture water level. The temperature in the shed is guaranteed between 2 and 8°C. When the temperature is highest at noon every day, the ventilation holes of the greenhouse are opened, so that the air in the greenhouse is fresh, and ventilation holes are installed at the top of the greenhouse to prevent the death of jaundice due to lack of oxygen.