Northeast light snow solar terms

Since the beginning of the light snow solar term, the frozen depth of soil in Northeast China has reached 10 cm.

Light snow is the twentieth solar term among the twenty-four solar terms, starting from 165438+ when the sun reaches 240 on October 22nd or 23rd every year. Light snow solar terms indicate that cold air becomes active, the temperature gradually drops, and the precipitation form changes from rain to snow. In this solar term, the freezing depth of soil in Northeast China reached 10 cm.

Northeast China is located in the northernmost part of China, with a continental monsoon climate of cold temperate zone. The winter here is long and cold, and the temperature is often MINUS ten degrees or even lower. With the arrival of the light snow solar term, the temperature gradually decreased, and the water in the soil began to freeze, which led to the freezing of the soil.

Soil freezing means that the water in the soil exists in the form of ice, not liquid water. When the soil temperature drops below 0℃, the water in the soil will freeze. This process is influenced by many factors, such as air temperature, soil type and soil moisture. Since the beginning of the light snow solar term, the temperature in the northeast has dropped below 10℃, and the moisture in the soil begins to freeze, resulting in the freezing depth of the soil reaching 10 cm.

Soil freezing has great influence on agricultural production and ecological environment. First of all, soil freezing will affect the growth of crops. Because the water in the soil can't flow, the roots of crops can't absorb water and nutrients, which hinders the growth of crops. Secondly, soil freezing will affect the activities of soil microorganisms.

Soil microorganism is an important factor to maintain soil fertility. They decompose organic matter, release nutrients and promote the growth of plants in the soil. However, at low temperature, the activity of soil microorganisms will decrease, which will affect the maintenance of soil fertility. In addition, soil freezing will also affect the recharge of surface water and groundwater, which will have a certain impact on water resources.

In short, the freezing depth of the soil in the northeast has reached 10 cm since the beginning of the light snow solar term. This phenomenon has a certain impact on agricultural production and ecological environment. In order to cope with these effects, farmers need to take corresponding measures, such as strengthening farmland management and selecting crop varieties that adapt to cold climate. At the same time, the government also needs to increase its support for agriculture to ensure the stable development of agricultural production.