The origin of autumn

Artificial division of beginning of autumn.

Author: Shirley August 7, 2006 1 1: 5 1: 43

"It's cool on beginning of autumn Day" obviously associates beginning of autumn with cool weather. It can be seen that beginning of autumn is the beginning of cool autumn.

Beginning of autumn is the 13 of the 24 solar terms. On August 7th or 8th every year, beginning of autumn is considered as the time when the sun reaches 135. "Autumn" means that summer is cool, which means the beginning of autumn. But in early autumn, the weather in Jianghuai area is still very hot.

According to the standard of dividing seasons according to the average temperature, it must be that the average temperature for five days is below 22℃ to be considered as autumn. According to this standard, the Jianghuai area generally enters autumn in the middle and late September. After beginning of autumn, although the summer heat is hard to disappear for a while, there is still the afterglow of "autumn tiger", but the general trend is that the weather is getting colder and colder. The daily temperature range is gradually obvious, which is often very hot during the day and very cold at night.

Autumn actually means that the crops are about to mature. After beginning of autumn, cotton bolls cracked and bolled at jointing and booting stage of late rice in most parts of South China. Mid-season rice and summer corn entered the stage of grain filling maturity. In the east and west of South China, the task of drought and flood control is still very arduous. South China after beginning of autumn is still in midsummer, but "beginning of autumn is full of yellow in ten days", and a golden "autumn" is coming!

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