1. Take a cold shelter on the fish pond to cover the water surface.
2, set the wind wall.
3, timing, quantitative, positioning put concentrates to ensure that the fry eat well, enhance the ability of the fry itself cold resistance.
4. If the fish pond water temperature drops to make fish dead or unwell, immediately change the water or use running water or other warming measures. In addition, when the water temperature is around 15 degrees Celsius, do not cast continuation material for oysters, clams, and bonito, only cast green material; when the water temperature is around 10 degrees Celsius, less or no cast green material; but can still apply the appropriate amount of feces. If continuous low temperature and rain will lead to deterioration of water quality, pond fish may cause disease hazards. In addition to paying attention to water changes and improving water quality, it is also necessary to spray drugs in time to prevent the spread of pests and diseases.