What does beginning of winter mean? Is beginning of winter the beginning of winter?

Beginning of winter, one of the twenty-four solar terms, and beginning of winter said that winter began.

The bucket refers to beginning of winter in the northwest, and the longitude of the sun is 225, which intersects the Gregorian calendar165438+1October 7-8. Beginning of winter is a seasonal solar term, and beginning of winter said that winter begins. After beginning of winter, the sunshine time will continue to shorten, and the height of the sun will continue to decrease at noon.

Beginning of winter, in ancient society, was one of the "four seasons and eight festivals" among the people, and people generally held sacrificial activities. Beginning of winter is not only the first season of winter, but also an important festival celebrated in many places in ancient China.

Beginning of winter solar terms and high-altitude westerly jet have been fully established in South Asia. At this time, the fluctuation of the south branch of the high-altitude westerly wind and its eastward movement have great influence on the precipitation weather in Jianghuai area. When the zonal circulation in Asia and the fluctuation of the south branch of the westerly wind are strong, there will be a wide range of rainy weather. In addition, the zonal circulation will end, the meridional circulation will be established, and there will be a cold wave and significant cooling.

Before and after winter, precipitation in most parts of China decreased significantly. The land in northern China is frozen, and agricultural and forestry crops have entered the wintering period. The "Sanqiu" in the Jianghuai region of China is drawing to a close, but the southern region of China needs to quickly plant late-season winter wheat and transplant rape, and the southern region is the best time to plant wheat. In addition, after winter, the air generally becomes dry and the soil water content decreases. At this time, China began to pay attention to the fire prevention work in forest areas.