The autumnal equinox signifies the harvest of autumn, and symbolizes that the autumn season is half over.

According to the lunar calendar, "Autumn" is the beginning of the fall season, and "Frost" is the end of the season, while "Autumn Equinox" is exactly half of the 90-day period from the beginning of the fall season to the end of the frost. Half of the 90 days. Autumnal equinox, China's Yangtze River Basin and the vast area north of the Yangtze River Basin, have entered the fall, the average daily temperature has fallen to below 22 ℃. Cold air masses in the north began to have some power, most areas of the rainy season has just ended, cool breeze, blue sky, wind and sunshine, high and refreshing autumn, danggui fragrance, crab fat chrysanthemum yellow, the autumnal equinox is a wonderful and pleasant time of the year.

It is also an important season for agricultural production, the characteristics of the fall cooling fast, making the autumn harvest, autumn plowing, autumn planting of the "three autumns" busy seems particularly intense. Autumnal equinox cotton spitting, tobacco leaves from green to yellow, it is a good time to harvest. North China has begun sowing winter wheat, the Yangtze River Basin and the southern part of the vast area is busy harvesting late rice, grabbing sunny plowing land, ready for oilseed rape sowing. So it signifies a good harvest in the fall.

The arrival of the autumnal equinox symbolizes the autumn season has passed half, China's ancient to spring, summer, autumn, winter for the beginning of the four seasons, each season of 90 days, the autumnal equinox is located in the middle of the 90 days, will be divided equally in the autumn, the arrival of the autumnal equinox means that half of the autumn season has been completed. Due to the vastness of our country and the different climatic qualities of each place, the weather remains sultry and hot in most areas during the autumn equinox, and it is not until after the autumnal equinox that the weather will gradually turn cooler.

Autumn equinox agricultural activities

The characteristics of the fall cooling fast, make the autumn harvest, autumn plowing, autumn planting "three autumn festival health" busy seems particularly intense. Autumnal equinox cotton spitting, tobacco leaves from green to yellow, it is a good time to harvest. North China has begun sowing winter wheat, the Yangtze River Basin and the southern part of the vast area is busy harvesting late rice, grabbing the sunshine plowing the land in preparation for rape sowing.

Autumn equinox drought or continuous rain is the main adverse factors affecting the "three autumn" normal, especially the rain will make the upcoming crop collapse, mold or germination, resulting in serious losses. "Three Autumn" busy, valuable in the "early" word. Timely harvesting of fall crops can be free from early frost and rainstorms, timely early sowing of winter crops can strive to take full advantage of the pre-winter heat resources, cultivate strong seedling safety over the winter, for the next year to lay the foundation for the next year's bumper crop.

Reference: Baidu Encyclopedia-Autumn Equinox