What do you mean shocked? It is one of the 24 solar terms. What are the climatic characteristics of shock?

Scared sting, called "Qixi" in ancient times, is the third of the 24 solar terms, marking the beginning of the mid-spring season; When the sun reaches the longitude of 345 degrees. "Twenty-four solar terms": "February Festival ... everything is shocked, shocked by thunder, so it is called a thorn. It's a leaving thorn. "

Insects used to hide in the soil in winter without drinking or eating, which was called "sting"; On the day of "Sting Festival", the spring thunder in the sky awakens the secluded animals, which is called "shock". Therefore, insects wake up when they are startled. As the weather gets warmer, there are gradually spring thunder, and most parts of China enter the spring ploughing season.

In ancient times, it was divided into three stages: "when the peach is waiting, it will begin to bloom;" Second, wait for the sound of Cang Geng (Huang Li); Three waiting eagles turned into pigeons. "The flower letters represented by the three stages of fright are:" Peach blossom, apricot blossom and rose. "

Climatic characteristics

"Spring thunder, everything grows", it is a sunny day in September, the temperature rises, the rain increases, and farmers have no leisure. It can be described as Heshui Zuo's "a thunderbolt startled snakes and insects, and several showers were raining purple. In 1999, the wind in the south of the Yangtze River warmed up and the green fields began to plow in spring. "

At this time, the average temperature in most parts of China has risen above 0℃ except the winter scenes in the northeast and northwest. The average daily temperature in North China is 3-6℃, and that in the south of the Yangtze River is above 8℃. The southwest and south China 10- 15℃ are already harmonious spring.

"Spring thunder scares thousands of insects", but the warm climate conditions are conducive to the occurrence and spread of many diseases and insect pests, and weeds in the fields sprout one after another. It is necessary to do a good job in pest control and intertillage weeding in time. "Peach blossoms come, swine fever comes", and we should also pay attention to the epidemic prevention of poultry and livestock.

At this time, the temperature rose rapidly, and spring thunder gradually appeared in most areas of the Yangtze River Basin. In most parts of southern China, the first sound of spring thunder can also be heard in the perennial rain and stormy waves; In the northwest of North China, except for a few years, it usually doesn't thunder until Qingming.

Thorns and thunder are the most striking. For example, "it thundered before the earthquake, and the clouds could not open for forty-nine days." The solar term of fright is in the middle of cold and warm weather. According to the cold and warm weather, there are proverbs to predict the weather in the later period: "Cold fright, warm spring equinox" and so on.

The wind with prickly knots is also used as a basis for predicting the weather in the later period. For example, "if you are afraid of the north wind, you will spend the winter from the beginning" and "if you are afraid of the south wind, you will plant seedlings later".

Modern meteorological science shows that the occasional thunder before and after the "wake-up" is due to the increase of earth humidity, which leads to the rise of hot air near the surface or the strong and frequent northward movement of hot and humid air.

Judging from the natural phenological process in various parts of China, due to the large span between north and south, the time when spring thunder begins to ring is different in the morning and evening. Thunder can be heard in southern Yunnan around the end of 1, and the first thunder day in Beijing is in late April. The saying that "thunder begins with you" only conforms to the climate law of the Yangtze River basin.