What month was the fright?

Jěng zhé is the third of the 24 solar terms. On March 5th and 6th, every year, when the sun reaches 345 degrees, it is "in a daze". Sting means that when the weather gets warmer, the spring thunder begins to sound, awakening the insects that are dormant and hibernating underground. "Sting" means hiding. "Twenty-four solar terms" said: "February Festival, everything vibrates, and when it vibrates, it thunders, so it is called thunder. It's an escaped cockroach. "Tao Yuanming, a poet in the Jin Dynasty, said in a poem:" During the spring rain (gü u), the east corner (yú) began to thunder, which shocked people. "In fact, insects can't hear thunder. Spring is back, and the warmer weather is the reason why they end their hibernation and "run away in surprise". In China, the time when the spring thunder begins to ring varies from place to place. On the average for many years, 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" is consistent with the climate law in Jiangnan.

In ancient China, the fright was divided into three stages: "When the peach blossoms bloom; Second, wait for the sound of Cang Geng (Huang Li); Three waiting eagles turned into pigeons. " The description is mid-spring, peach blossom red, pear blossom white, orioles singing and swallows coming. According to the general climate law, the weather in all parts of the country began to get warmer, with more rain, and most areas entered spring ploughing. When all kinds of insects dormant and hibernating in the soil are awakened, eggs in winter will also begin to ovulate. It can be seen that fright is a solar term reflecting natural phenology.

People should pay attention to the forecast of strong cold air activities by meteorological stations, guard against changes in temperature and cold, and prevent the prevalence of seasonal diseases such as colds.

Climatic characteristics

"Spring thunder rings, everything grows", and it is a fine sunny day in September, with the temperature rising and the rain increasing. In addition to the winter scenes in which the northeast and northwest regions are still covered in white, the average temperature in most parts of the country has risen above 0℃, the daily average temperature in North China is 3-6℃, the temperature in the south of the Yangtze River is above 8℃, and the temperature in Southwest China and South China has reached 10- 15℃, which is already a harmonious spring.

"Spring thunder scares thousands of insects", and the warm climate conditions are conducive to the occurrence and spread of many diseases and insect pests, and weeds in the fields are also sprouting. 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; However, except for a few years, there was no thunder in northwest China until Qingming, which is the latest area where thunderstorms began in most parts of southern China.