Snow is beneficial to the growth and development of crops. Snow is a kind of material with good heat preservation effect, which can protect plants from frostbite in cold winter. The melting of snow water in the next spring can provide a good water supply for vegetation. The power of nature is definitely not a coincidence. Because of the poor thermal conductivity of snow, covering the soil surface with a layer of snow can reduce the diffusion of soil heat.

2. The most basic condition for the formation of rain and snow is the existence of "condensation nuclei" in the atmosphere, and solid impurities such as dust, coal particles and minerals in the atmosphere are the most ideal condensation nuclei.

If meteorological factors such as water vapor and temperature in the air reach certain conditions, water vapor will condense into snowflakes around these condensation nuclei. Therefore, snowflakes can clean many pollutants in the air, and the air is particularly fresh after a heavy snow.

3. Urban snowfall plays an extremely important role in alleviating and supplementing the shortage of urban water resources in winter and improving and protecting the ecological environment.

4. Using the low temperature of snow and its snow water to cultivate cold-loving crops and fungi in spring and summer; In aquaculture, the low temperature of snowmelt water is used to breed fry and cultivate special stream fish; In spring, snowmelt water can replenish groundwater, thus alleviating the drought in spring.

5. Mix the snow stored in the snow shed with the output high-temperature wastewater in proportion, convert the snow into snowmelt water, keep its temperature at about zero, cool the equipment again, and so on.

Extended data:

Formation of snow

Snowflakes have many shapes and are very beautiful. If you put them under a magnifying glass, you will find that every snowflake flower is an extremely beautiful pattern, and even many artists are amazed.

Snowflakes are mostly hexagonal, because snowflakes belong to hexagonal crystal system. There are two main shapes of small ice crystals in the "embryo" of snowflakes in the cloud. One is hexagonal, slender and called columnar crystal, but sometimes its two ends are pointed and look like needles, called acicular crystal. The other is a hexagonal flake, just like a flake cut from a hexagonal pencil, called a flake crystal.

References:

Baidu encyclopedia-snow