Joan Hinton proverb

Proverbs: Nothing is colder than spring. It refers to the cold in late spring, which easily leads to disease.

Late spring cold: a weather phenomenon with high temperature in early spring and low temperature in late spring. It's dark and cold. There's nothing worse than the cold in late spring. It refers to the cold in late spring, which easily leads to disease.

The cold in late spring is mainly caused by long-term rainy weather or frequent invasion of cold air, or by strong radiation cooling on sunny nights under the control of cold anticyclone.

If the average temperature in late spring is more than 2℃ lower than normal, it is considered as cold weather in late spring, which can cause harm to agricultural production, especially in the early stage of late spring, which is higher than normal, and in the later stage, the temperature is lower. It can often cause rotten seedlings of early rice in southern China and rotten seeds or dead seedlings of peanuts, vegetables, cotton and wheat in northern China.

In order to prevent late spring cold, we should not only improve the cultivation management level and raise seedlings by heat preservation, but also determine the reasonable sowing date according to the occurrence law of late spring cold in various places to avoid its harm.

Simply put, in spring, the weather gets warmer, and the temperature drops obviously due to the invasion of cold air, which is harmful to crops. This kind of "warm before spring, cold after spring" weather is called late spring cold.

example sentence

The ancients said: ~. "In early spring, it's warm and pleasant on sunny days, and it's chilly on cloudy days, and there is often a resurgence of cold air, which will make people feel back to winter. Therefore, after beginning of spring, we should follow the principle of "covering the spring and freezing the autumn", pay attention to keep warm, and increase or decrease clothes in time.