Autumn sounds have gone, and solar terms are hard to see.

The autumn sound has gone, and the rainbow is hard to see. It's a light snow solar term.

Light snow is the twentieth solar term among the twenty-four solar terms and the second solar term in winter. The time is Gregorian calendar1October 22 or 23 165438, that is, when the sun reaches 240 degrees of the yellow meridian. Light snow is a solar term reflecting precipitation and temperature, and it is a solar term with high frequency of cold wave and strong cold air activity. The arrival of the light snow solar term means that the weather is getting colder and colder and the precipitation is gradually increasing.

Light snow is a climatic concept, and its climatic factors include precipitation, temperature and light. The name of light snow, because "snow" is the product of cold weather, the climate is not deep and the precipitation is not heavy during this solar term, so "light snow" is used to compare the climate characteristics during this solar term.

The light snow solar term reflects the changing trend of temperature and precipitation, and does not mean that there is a small amount of snow under this solar term. The solar term "light snow" is not necessarily related to the "light snow" in the weather.

During the light snow solar term, a relatively stable meridional circulation has been established in East Asia, and low pressure or trough often appears in Siberia. When moving eastward, there will be a wide range of cold air going south, which will bring a wide range of strong winds and cool weather.

Xiaoxue farming activities:

During the light snow solar term, farmers all over the province seize the farming season and do a good job in harvesting, sowing and cold protection management. At the beginning of the light snow solar term, the frozen depth of the soil in Northeast China has reached 10cm, with an average of 1cm for almost one day and night, and more than one meter at the end of the solar term. Therefore, as the saying goes, "the snow area is tightly sealed", and then rivers of all sizes freeze.

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.