There is no snow in the snowy solar terms.

There is no snow in the heavy snow, which means that if there is no heavy snow in winter, the cows will rest in the coming year, which means that the grain growth in the coming year is not good. Heavy snow is of great significance to grain harvest;

1, snow can store water and fight drought. Heavy snow falls into the field and becomes a natural cover, which can effectively inhibit soil moisture evaporation; When the snow melts, the snow water seeps into the soil again, increasing the soil moisture. It is very beneficial to the growth of winter wheat, winter rape and other crops, can meet the water demand of crops after turning green, and plays a role in water storage and drought resistance.

2. Snow can prevent cold and keep warm. The snow that has just fallen to the ground is soft and has many gaps. The air in the gaps is a poor conductor of heat, which makes the heat in the soil difficult to dissipate. At the same time, it prevents cold air from invading the soil, which makes the snow cold and warm, protects crops from low temperature, and is conducive to the safe overwintering of crops.

Snow can produce nitrogen fertilizer. Snow can absorb a large number of free gases in the air and generate nitrides through chemical reactions. When snow melts, these nitrides will penetrate into the soil with snow water, thus increasing soil fertility. According to the data, one liter of snow water contains 7.5 ml of nitride, which is five times that of one liter of rain water.