When is the snow in the "Ruixue Year" considered as "Ruixue"?

The snow in "Xue Ruizhao's bumper year" refers to the snow that falls after the light snow festival, which is called Xue Rui.

After the light snow festival, the next snow can prevent the overwintering crops from freezing and keeping warm, prevent the heat in the soil from radiating outward, and prevent the invasion of cold air from outside.

When the earth warms up next spring, the snow on the ground will slowly melt. The loss of snowmelt water is less, and most of it seeps into the soil, just like an irrigation, which is of great benefit to alleviating spring drought and sowing well in spring. Melting snow water can bring more nitrogen compounds to the soil. The unique function of Xue Rui is determined by its own nature.

When it snows heavily after the light snow festival, the field is like a big quilt, and the heat in the field is not easy to dissipate, which protects the overwintering crops from freezing. In addition, when the snow melts and seeps into the soil, most of the overwintering eggs will freeze to death, which will reduce the pests in the next year and be beneficial to the growth of crops.