What is the origin of Xiaoxue solar term in the twenty-four solar terms?

Recently165438+1October 22nd ushered in a light snow with 24 solar terms. There is a saying among the people that "the snow is frozen", which means that after the light snow, rivers and rivers freeze one after another. The agricultural proverb says, "Light snow will make the coming year rich." So how much do you know about the light snow solar term? How is the date of Xiaoxue calculated, the origin of Xiaoxue or something? What will happen to the light snow solar term climate? With the above questions, the following singularity constellation network will answer them for you one by one.

The origin of light snow solar terms in the twenty-four solar terms

As the saying goes, "the snow area is tightly sealed" means that after the light snow, rivers and rivers freeze one after another. The agricultural proverb says, "Light snow will make the coming year rich." There are three meanings here. First, there will be light snow, and the rain will be even in the coming year, without major droughts and floods; Second, snow can freeze some germs and pests to death, reducing the occurrence of pests and diseases in the coming year; Thirdly, snow can keep warm, which is conducive to the decomposition of soil organic matter and enhance soil fertility. Therefore, as the saying goes, "Xue Rui is a good year."

Calculation formula of light snow solar term date: [y * d+c]-Interpretation of L formula: Y= two digits after the number of years, D=0.2422, L= leap year, 2 1 century C=22.36, and 20th century =23.08. For example, the date of light snow in 2088 = [88× 0.2422+22.36]-[88/4] = 43-22 = 2 1.165438+1October 21light snow. Exception: 1978 plus 1 day. 20 13 light snow time:165438+1October 221:48: 06, 20 13 years of the lunar calendar1October 20.

Three stages of the light snow season: when the rainbow disappears; Second, the weather is rising and the atmosphere is falling; Third, the weather was blocked and turned into winter. Explanation: The Yang in the sky rises and the Yin in the ground falls, which leads to the impassability between heaven and earth, and the disharmony between Yin and Yang, so everything loses its vitality, and the heaven and earth are blocked and become a cold winter.

Introduction of light snow solar terms: Light snow indicates the beginning time and degree of snowfall. Snow is the product of cold weather. Light snow solar terms, the northern Sichuan Basin began to enter winter. "There is no rain in the lotus, but there are frost branches in the chrysanthemum", which has already shown the scene of early winter. Because there are barriers at the northern foot of Qinling Mountain and Daba Mountain to block the invasion of cold air and reduce the severity of cold wave, the basin is "warm in winter and cool in summer". The number of snowfall days in the whole year is mostly less than 5 days, which is much less than that in the middle and lower reaches of the Yangtze River at the same latitude. There is little chance of snowfall before the heavy snow. Even in the middle of winter, you can rarely see the charming scenery of "blowing open the petals of ten thousand pear trees". Because the surface temperature of the basin is often above 0℃ in winter, it is more difficult to snow than to snow. Occasionally, although the sky is buzzing, there is no "broken jade" on the ground. In the cold western Sichuan Plateau, snow usually starts at 65438+ 10 all year round. The number of snowfall days in the northwest of the plateau can reach more than 60 days a year, and snowfall is possible in some alpine regions all year round. During the light snow, the first frost can be seen in the northwest of the basin, so it is necessary to guard against the harm of frost to crops. The lowest temperature in Gansu and northern Afghanistan is around-15℃, so it is necessary to keep livestock warm and cold.

The origin of light snow solar terms: Light snow solar terms to "light snow" are festivals that reflect weather phenomena. There is little snow, and there is no snow on the ground. This is the original meaning of the solar term "light snow". The ancient book "Qunfangpu" says: "Light snow will snow when it is cold, and it will not even snow on the ground, and the snow is not big." In other words, due to the cold weather, the form of precipitation changed from rain to snow in the "light snow" festival, but at this time, because the ground is not very cold, the number of snows is small and the amount of snow is not large, so it is called light snow. So light snow indicates the beginning time and degree of snowfall. Light snow, like rain and Grain Rain, is a solar term that directly reflects precipitation.

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