Is heavy snow a solar term among the 24 solar terms? What's the story?

Heavy snow and solar terms, the longitude of the sun reaches 255 degrees. The ancients said, "The great man will prosper, and the snow will come here", which means that at this time, it often snows in a wide range.

At this time, the lowest temperature in most parts of China has dropped to 0℃ or below. Often, in areas where cold and warm air meets strong cold air fronts, there will be heavy snow or even blizzard. It can be seen that the solar terms of heavy snow indicate the starting time of this period and the degree of heavy snow, which, like the solar terms of light snow, rain and Grain Rain, directly reflect the precipitation.

It is often said that "snow is good for harvest". In severe winter, snow covers the earth, so that the temperature around the ground and crops will not drop very low due to cold current, and winter crops create a good wintering environment. When the snow melts, the soil moisture content is increased to meet the needs of crop growth in spring.

Extended Information 201165438+1On October 30th, China declared the "24 solar terms-time knowledge system and its practice formed by China people by observing the annual movement of the sun", which was officially listed in the representative list of human intangible cultural heritage.

The earth rotates once a day and revolves around the sun once a year. Because of the different position of the earth in the orbit of revolution, the climate and the length of day and night have changed.

Our ancestors divided a solar year into 24 segments according to the climate change of direct sunlight at different positions on the earth, that is, the earth's revolution was divided into 24 solar terms every 15 degrees, representing 24 different positions of the earth in the orbit of revolution.

Each solar term is about 15 days apart. In this way, there are two solar terms every month, one year 12 months, which is exactly 24 solar terms.

Among them, the first solar term of each month is "solar term", namely: beginning of spring, Jing Zhe, Qingming, Changxia, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter, heavy snow and slight cold; The second solar term of each month is "Zhongqi", that is, the twelve solar terms: rain, vernal equinox, Grain Rain, Xiaoman, summer solstice, great summer heat, early Shu, autumn equinox, first frost, light snow, winter solstice and great cold.

Baidu encyclopedia-heavy snow

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