What is the early frost ant manor?

The first frost refers to the frost that appears during the transition from warm season to cold season.

Frost will appear in autumn, winter and spring. The first frost refers to the frost that appears during the transition from warm season to cold season. With the passage of the season, its frequency and intensity increase gradually.

In the mid-latitude plain of China, early frost often appears in autumn, so it is also called autumn frost. In the Sichuan Basin, the hilly areas of the south of the Yangtze River and the Wuyi Mountains, the first frost often appears after 65438+February, which is also called early winter frost.

Time of first frost

China has a vast territory, and the first frost dates are quite different. In mid-September, the first frost appeared in northern Xinjiang, Inner Mongolia and Northeast China. Northeast China, North China, West China, and most of Northwest China appear in late September to 10 in early October.

165438+1At the beginning of October, the frost line moved south to Qinhuai area; 165438+1arrived in the southwest and the middle and lower reaches of the Yangtze River in late October. 65438+arrived in Nanling in early February; The first frost in north-central South China occurred from the end of June 65438+ February to1mid-October 65438+.