What does the frost mean at the beginning of this year?

This year, the first frost means that this solar term will come in September of the lunar calendar. At this time, due to the cold weather, the surface water vapor condenses into frost, so it is called "first frost".

The first frost is the 18 of the 24 solar terms. When the sun reaches 2 10, it will be the first first frost solar term. Its time is Gregorian calendar1October 23-24, 10. The solar term for the first frost this year is 10 year 10 23rd, and September 28th of the lunar calendar. During the first frost solar term, due to the frequent southward movement of cold air, the temperature dropped significantly, the temperature difference between morning and evening was large, and the autumn dryness was more obvious.

There are also three periods in the first frost solar terms: first, jackals sacrifice animals; Second, the vegetation is yellow; Third-class stinging insects are salty. It means that when the first first frost solar term comes, jackals and other wild animals will start to catch a lot of food to prepare for the winter.

Moreover, the food they catch will not be eaten immediately, but hung on trees to dry. After that, the leaves began to fall in large quantities, and many insects also hid for the winter because of the cold feeling.

rural activity

After the first frost solar terms, cold air activities become more frequent, and the temperature difference between day and night becomes larger. The "first frost" solar term has nothing to do with "first frost", which does not mean that entering the first frost solar term will lead to "first frost". In fact, "frost" does not fall from the sky, but the water vapor on the ground condenses when it meets cold air due to temperature difference changes.

There is no concept of "first frost" in meteorology. Generally speaking, the first frost in autumn is called "first frost" or "first frost", and the last frost in spring is called "late frost" or "final frost". The interval from the last frost to the first frost is a frost-free period.

In the first frost season, most parts of the north have been harvested in autumn. Even cold-resistant onions can't grow any longer, because "the first frost can't support onions, and the longer they grow, the more empty they are." In the south, it is the peak season of "Sanqiu". Only single-season hybrid rice and late rice are harvested, and early-season wheat and early-season rape are planted. Picking cotton, pulling cotton stalks, ploughing and soil preparation.