Specific introduction:

The first frost, one of the 24 solar terms, is around 65438+1October 23rd every year. The first frost solar term means that the weather is getting colder and the first frost appears. It is the last solar term in autumn, which also means that winter is about to begin. Health care is particularly important in the first frost season. There is a folk proverb that "it is better to make up the first frost once a year", which shows the influence of this solar term on people.

1. Climate characteristics:

There is frost when it is frozen, so autumn frost and spring frost are collectively called frost.

The solar term of the first frost means that the weather is getting colder and first frost begins. In the south of south latitude, the average temperature is around 16℃, and frost will not be seen until the middle of winter in the valley area of south China. Even at the same latitude, the temperature and humidity of the air near the stratum are different because of the different altitude and topography, so the first frost period and frost day are different.

In the first frost season, the cool autumn wind blows to Guangzhou, the flower city. The average temperature in northeast China, eastern Inner Mongolia and most parts of northwest China has been below 0℃.

2. Anti-freezing measures:

(1) Plant early and stagger the frost in late autumn.

(2) Farmers make smoke in vineyards to resist frost.

(3) Selecting early-maturing and high-yielding varieties.

(4) Water, because dry soil dissipates heat faster than wet soil.

(5) Smoked smoke can form heat preservation clouds in a small area, thus reducing freezing injury.

(6) Mowing can increase the ground temperature.