When does frost usually occur?

Frost usually occurs in the early morning, generally at night, the temperature is low, the sky is clear and cloudless, and the heat emitted from the ground is less, resulting in high air humidity, dew point temperature falling below 0 degrees, and water vapor will condense into frost when it contacts the ground or other objects, forming frost phenomenon. Generally speaking, the time of frost will be different due to regional, seasonal, weather and other factors, and it is more likely to appear in late autumn and early winter.

Frost is very harmful to some vegetables, fruits and crops, which will lead to damage to leaves, stems and jelly, and even direct death, thus affecting agricultural production. Roads, bridges and other buildings may freeze in frosty weather, threatening traffic safety and aggravating the incidence of traffic accidents. Frost also has a certain impact on people's health, increasing the risk of accidents such as slipping and falling, and reducing people's outdoor activities.

Frost prevention measures

1, pay attention to keep warm: frosty weather with low temperature can easily lead to body temperature loss and cause diseases. In frosty weather, pay attention to keep warm, wear thick clothes, hats, gloves and other warm-keeping products to avoid prolonged exposure to cold air.

2, pay attention to non-slip: frost will freeze the ground, easily lead to slip and fall. Pay attention to anti-skid in frost weather, wear anti-skid shoes or insoles, avoid walking on icy roads, drive carefully, etc.

3, pay attention to antifreeze: in frosty weather, water pipes, faucets, etc. It's easy to freeze and it's easy to break. Pay attention to anti-freezing in frost weather, and use heating equipment and insulation materials to prevent water pipes and faucets from freezing and cracking.

4, pay attention to fire prevention: dry and frosty weather, easy to cause fire. Pay attention to fire prevention in frost weather, avoid using flammable materials and fire sources, pay attention to fire safety and avoid fire accidents.

5. Pay attention to the maintenance of plants: Frost will do harm to plants, such as withered leaves and damaged fruits. In frosty weather, attention should be paid to the maintenance of plants, which can be protected by covering plants and watering to avoid frost damage to plants.