What is frost?

When it comes to frost, people naturally associate it with frost. However, frost and frost are not the same thing Frost refers to the white crystal on the object near the ground or when the ground temperature drops to 0℃, and the water vapor in the air condenses directly on the object. Frost refers to the sudden drop of temperature below the minimum temperature required by crops, which is enough to cause plant damage or wither and die. Therefore, when frost occurs, there may be frost or no frost. According to the time when frost appears, it can also be divided into late frost (appearing in spring) and early frost (appearing in autumn).

Frost is very harmful to crops, so we must do everything possible to prevent frost. Farmers in various countries have accumulated many effective frost prevention methods in the long-term agricultural production practice, such as cultivating cold-resistant varieties, increasing the application of agricultural chemical fertilizers, rational topdressing, spraying plant hormones, and transplanting seedlings. Early frost can also be prevented by physical methods.