Why is it the thunder of spring?

The reason why the sting is spring thunder is because if it thunders before the sting, it will be rainy and rainy this year, and disasters will continue.

Insect awakening is the third of the 24 solar terms, and it is also the beginning of the mid-spring season. The time point is between March 5 and 7 of the Gregorian calendar every year, and the sun reaches 345.

In the twenty-four solar terms, awakening reflects the phenomenon of biological germination and growth under the influence of rhythm changes. It is the reflection of ancient farming culture on natural festivals, which is of great significance in busy farming.

This solar term is also called "Qixi" in history. "Xia Zheng Xiao" said: "The first month of the month began to sting". In today's China cultural circle, the Japanese still use the name "Kai Zhe".

Climatic characteristics:

"Spring thunder, everything grows long", 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.

1999, the wind in the south of the Yangtze River brought warmth, and the green fields began to plow in spring. "At this time, the average daily temperature in most parts of China has risen above 0℃, the average daily temperature in North China is 3-6℃, the average daily temperature in Jiangnan is above 8℃, and the southwest and south China are 10- 15℃, which is already a 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.