Frost disasters in the north are one of the main threats to crop production. When the weather gets colder at night, frost may appear on the blades of grass, autumn frost is a natural phenomenon, and spring frost is less friendly. In the Northwest, a black frost is prone to appear in the spring.
This is a weather phenomenon that occurs when encountering strong cold air, the temperature in the air is reduced to below zero, but the crops are not prepared for this, so the moisture in the leaves of the crop will freeze into ice, the chloroplast will die, and it will appear black, and the frost condensed on this leaf is the legendary black frost.
In the spring, black frost can become a natural enemy of agriculture, and the seedlings of many crops will die in large quantities due to frost. The peasants' busyness in this spring and summer season was basically in vain. Now with the increase of extreme climates, the probability of black frost in spring and autumn is quite high, and on a clear night, if you encounter a sudden strong cold air, then the next morning you can get up and bury your seedlings.
Don't think it's just a concern, in the current climate, any natural disaster is possible. Farmers in northern China have not seen frost for too long, and if they do encounter frost one day, it is estimated that they will suffer for a long time.
What do you think?