1, monitoring and early warning
Establish and improve the meteorological monitoring and early warning system, pay close attention to weather changes, especially during the high frost season in spring and autumn, and release frost early warning information in time so that farmers can take timely measures to prevent it.
2. fumigation
Before the frost comes, smoke screen is used to increase the atmospheric inverse radiation and reduce the ground heat dissipation speed, thus reducing the frost damage. Smoke can be produced by burning straw, weeds and other fuels in farmland.
3. Water spraying method
Before the frost comes, spraying water on the surface of crops will slow down the temperature, increase the water vapor content in the atmosphere, and the water vapor will condense and release heat, thus reducing the frost damage.
4. Covering method
Cover crops with straw curtains, films and other materials to reduce heat loss and reduce the impact of frost on crops. This method is suitable for small area farmland.
5. Wetland law
Before the frost comes, the farmland soil should be watered, and the characteristics of wet soil, such as large heat capacity and high thermal conductivity, should be used to slow down the ground cooling speed, thus reducing the frost hazard.
6. Irrigation methods
Farmland irrigation can increase the air humidity near the ground, protect geothermal energy and raise the temperature, thus reducing the impact of frost on crops.
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