When is the millennium solar term?

The solar term of the Millennium is 5: 26: 3 1 second on September 8.

After entering the Millennium solar term, the summer monsoon was gradually replaced by the winter wind, and the cold air gradually went south frequently. In addition, the position where the sun directly touches the ground moves south, so the sunshine time in the northern hemisphere becomes shorter and the sunshine intensity weakens. At night, it is often sunny and cloudy, and the ground radiation dissipates quickly, so the temperature drop gradually accelerates. There is a saying, "Autumn is a thousand years, and it is cool all night."

After the Millennium, the temperature difference between day and night gradually widened. Although the temperature is high at noon during the day, it is already cool in the morning and evening. According to the standard of "average temperature" proposed by modern scholar Zhang Baokun, the average temperature is 10-22℃ in spring or autumn. According to this standard, from the beginning of the Millennium solar term, all localities began to enter autumn one after another. At this time, the temperature difference between day and night in China can reach 8℃- 16℃, so the temperature difference of the Millennium is large in a year.

Farming activities in Millennium Festival

"White dew" represents the change from hot to cold. Everything grows with the cold, and gradually declines and matures. The Millennium is the busiest season in China. In the northeast, millet, sorghum and soybeans began to harvest, and new cotton was picked in some places; At the same time, it is necessary to select seeds for cotton, corn, sorghum, millet and soybean. , timely stubble cleaning, soil preparation, fertilizer delivery, and rush to plant wheat.

In North China, it is also the busy season of autumn harvest, and all kinds of autumn crops have matured and begun to harvest; At the same time of autumn harvest, we must pay close attention to sending manure, plowing and leveling the land, and make preparations for planting wheat as soon as possible. Winter wheat has been planted in the northwest of China. In the southwest, when the dew season comes, there is a busy scene everywhere. Because of the "white dew", the millet is covered with yellow rice and millet, so we should harvest it quickly.

For late autumn crops, such as corn and sweet potato, field management should be strengthened to promote their early maturity and avoid the harm caused by low temperature and frost. In Central China, late rice and middle rice should be harvested quickly, and summer corn should also be harvested. Cotton should be picked in batches, and water management should be strengthened for late corn. In addition, we must pay close attention to leveling the land and prepare to plant wheat.