What are the characteristics of autumn?

Autumn has three characteristics: dry, cold and ripe fruit season. First of all, dry weather is a necessary process in autumn, and there is more rain in summer. After changing seasons, the precipitation is obviously reduced, and the air humidity is much lower than that in summer. Viral activity is enhanced in dry environment. In addition, the wind is generally strong in autumn. With the autumn wind blowing, the virus is naturally inhaled into the body through breathing, resulting in diseases.

Autumn is the harvest season, and the fruits of many plants mature in autumn. In the subtropical region of the northern hemisphere, the temperature in autumn is obviously lower than that in summer. As the temperature drops, the leaves of many deciduous perennial plants will gradually change color, wither and fall off, leaving only branches for winter. Panicum miliaceum will come to the end of his life, withering and dying.

Autumn solar terms

1. beginning of autumn: beginning of autumn means that autumn is about to begin. There will be a cool breeze in the morning and evening, but the temperature is still very high during the day, especially at noon.

Second, the heat: the arrival of the heat means that the hot summer is about to pass, the weather is getting colder, and the cooling tools such as fans and air conditioners are slowly becoming idle.

Third, the white dew: after entering the white dew solar term, the temperature drops rapidly at night, which is easy to reach the condition of dew. The temperature is high during the day and low at night. As the temperature drops rapidly, the water vapor in the air condenses into dew. This stage has usually entered a busy autumn harvest. There is a proverb that says, "The Millennium is cold at night and hot during the day".

Fourth, the autumnal equinox: At this time, the sky is high and the clouds are white, giving people the feeling that the sky is high and the clouds are light and the autumn is crisp. Early in the morning and one night, the temperature changed from cold to cold.

Five, cold dew: into the cold dew season, the weather is cold, but not to the extent of cold.

First frost: The first frost said that the weather would get colder gradually, and the dew would soon turn into frost, and the field work had entered the final stage. There is a proverb that says "the first frost frost".