What's the difference between snow in Chun Xue and winter?

Winter snow generally refers to the snow in winter. If you encounter snow in winter, insect eggs and hibernating insects will die, and because the air is dry in winter, snow melts into water, which can just replenish water to crops.

Chun Xue refers to the snow in spring. Because there is plenty of water in spring, if it snows again, it will probably lead to the crazy growth of leaves and stems of crops, which will lead to their nutrients flowing to the stems and leaves, and the fruits will be few and small. Not only that, the snowfall in spring will cause plants to freeze to death directly, which will further affect the harvest of crops.

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There are two conditions for snowfall: first, water vapor saturation. Another condition is that there must be condensation nuclei in the air.

The size of snowflake crystals is closely related to the temperature at which water vapor condenses and crystallizes. The colder the weather, the lower the temperature and the smaller the snowflake crystal. When the weather is very cold, the diameter of snowflake crystals formed is often less than 0.05 mm.

Meteorologists have observed that prismatic ice crystals will form when the temperature is between -8℃ and -5℃. When the temperature is -5℃ to -3℃, needle-like ice crystals are formed; When the temperature is -3℃ to 0℃, thin hexagonal plate-like ice crystals will be formed. It can be seen that when the temperature is between -3℃ and 0℃, the shape of snowflake is the largest and most complete. Snowflake crystals formed in very cold weather are so small that they are almost invisible to the naked eye. Only when they shine in the sun can people find them as fine powder. This kind of snow is called dry snow.