What are the four seasons in agrometeorology?

Beginning of spring, Changsha, beginning of autumn and beginning of winter are divided into four seasons, with a date of three months, six solar terms and two seasons.

The fourteen solar terms correspond completely. Meteorological statistics regard March, April and May as spring, June, July and August as summer, 9, 10,

1 1 is autumn, 12, 1 and February is winter. Agrometeorology is based on the climatic average temperature (climatic average gas)

The continuous days with temperature greater than 22℃ are summer days, the continuous days with temperature less than 10℃ are winter days, and the continuous days with temperature of 10 ~ 22℃.

This period is spring and autumn. )