What are the characteristics of the first frost solar terms?

There is a saying in the solar terms of "First Frost", "In mid-September, the air is cold and condensed, and the dew becomes frost". At this time of the year, frost has begun to fall in the Yellow River basin. What are the tips for the first frost solar terms? What are the characteristics of the first frost? Let's study together.

Little knowledge of first frost solar terms

The first frost is the last solar term in autumn around June 23rd every year. 10 means the transition from autumn to winter. During the first frost, the temperature difference between morning and evening reaches the maximum, and the ground temperature in some areas even drops to zero degrees Celsius at night, which will start to form hexagonal white frost flowers, which is the origin of the name of the first frost.

Solar term characteristics of first frost

"The first frost in the first frost" is the climatic feature of the Yellow River Basin in China. The first frost in all parts of China extends from north to south and from mountains to plains. Meteorologically, the first frost in autumn is called "first frost" or "first frost", and the last frost in spring is called "last frost" or "late frost". The earlier the first frost appears, the greater the harm to crops. Because it happens to be the season when chrysanthemums are in full bloom, they all call the "first frost" the "chrysanthemum frost". The ancients said, "All trees sweep away pornography, and only Furong is alone." In the first frost season, the autumn harvest has begun in northern China. Even the cold-resistant onions have stopped growing at the moment, so there is a saying that "the first frost can't support onions, and the longer it takes, the more empty it will be." Most areas have also entered the dry season and the climate is very dry. At this time, it is necessary to do a good job in forest fire prevention.

The first frost is three seasons

In ancient China, the first frost was divided into three stages. Jackals are sacrificial animals. At this time, wild animals such as jackals began to catch prey and prepare for the winter; "Second, the vegetation is yellow", the autumn wind is bleak, the leaves are withered, and the flowers and plants are yellow, which is the scene of the first frost season; "Three stings change salt", when winter comes, the temperature drops suddenly, and the insects crouch in caves, motionless without eating, and enter hibernation.