frost reduction solar terms, "in September, the Qi is cold and condensed, and the dew is frozen.". At this time of year, frost has begun to fall in the Yellow River Basin, and the scene of late autumn is becoming more and more obvious. The vegetation is withered and yellow, and the autumn wind is bleak. So what is the little knowledge about frost solar terms? What are the characteristics of frost? Next, let's learn together.
frost term small knowledge
frost term is the last solar term in autumn before and after October 23 every year, which means that in the transition stage from autumn to winter, the temperature difference between morning and evening reaches the maximum during the frost period, and the ground temperature at night in some areas even drops to zero degrees Celsius, which will begin to form hexagonal white frost flowers, This is the origin of the name of frost. The characteristics of,
and "the beginning of frost" are the climatic characteristics of the Yellow River Basin in China. The first frost in all parts of China is gradually extended from north to South and from high mountain to plain. In meteorology, the first frost in autumn is called "first frost" or "early frost", and the last frost in spring is called "final 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, some people also call the "first frost" as "chrysanthemum frost". The ancients said that "thousands of trees sweep yellow, and only hibiscus flowers bloom alone." during the frost season, the finishing work of autumn harvest has begun in northern China, and even the cold resistant onion has stopped growing at the moment. Therefore, there is a common saying that "the frost can't afford the onion, the longer it is, the more empty it is" 。 Most areas have also entered the dry season, and the climate is very dry. At this time, we should do a good job in forest fire prevention.
three periods of frost fall
in ancient China, frost fall was divided into three periods. "Jackals are sacrificial animals". At this time, jackals and other wild animals began to catch prey and prepare to store for the winter; "The second time the plants and trees fall yellow", the autumn wind is bleak, the leaves wither, and the flowers and plants wither and yellow, which is the scene of frost season; "Three seasons of dormant insects are salty and prone". Winter is coming, the temperature drops sharply, and the insects are dormant in the cave, do not move or eat, and enter the state of hibernation.https://www.dailyq-a.com/Culture/33513.html
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