During the solar term, yellow insects fly out of the countryside at night.

The third of the 24 solar terms falls on March 5 or 6; It means that hibernating animals begin to wake up. Sting is one of the 24 solar terms. Every year, when the sun runs to 345 degrees of the yellow meridian, it is called tingling, usually from March 4 to 7 every year, when the temperature rises rapidly and spring thunder sprouts. "Stinky" refers to the activities that small animals are drilled into the soil by Lei Zhen to spend the winter. This solar term is of great significance in busy farming. Since ancient times, the working people in our country have attached great importance to the solar term of fright and regarded it as the day when spring ploughing began. There is a saying in Tang poetry: "A light rain brings new flowers, and a thunder begins." Tian Jia had a few days off, so he began to farm. Agricultural proverbs also say, "Spring ploughing can't stop, after the Scare Festival", "Let a hundred flowers blossom and farm work come together." Winter wheat in North China began to turn green, and the soil was still frozen and thawed alternately. Raking the ground in time is an important measure to reduce water evaporation. "Shocking without harrowing is like steaming steamed bread", which is a valuable experience for local people to fight drought and conserve moisture. Wheat in the south of the Yangtze River has been jointing and rape has begun to blossom. There is a high demand for water and fertilizer, so topdressing should be done in time, and proper irrigation should be done in dry and rainy places. Rain in the south can generally meet the needs of vegetables, wheat and green manure crops in spring, and it is most important to prevent wet damage. As the saying goes, "It's better to dump manure than to plow wheat with three pipes" and "If you want to harvest rapeseed, you must manage plowing diligently". We should continue to do a good job in ditch cleaning and drainage. We should pay close attention to sowing early rice in South China, and at the same time do a good job in cold prevention in rice fields. As the temperature rises, tea trees gradually germinate, so it is necessary to prune and apply "germination accelerating fertilizer" in time to promote more branches and leaves and increase tea yield. Fruit trees such as peaches, pears and apples should be fertilized before flowering. 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. 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" only conforms to the climate law of the Yangtze River basin. 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. Like other solar terms, the date of insect awakening is not necessarily related to the lunar calendar (20 1 1 is the second day of February). 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. " It is described that it is the season of peach blossom red, plum blossom white, orioles singing and swallows coming, and most areas have entered spring ploughing. When all kinds of insects dormant and hibernating in the soil are awakened, eggs will begin to ovulate in winter, so it can be seen that fright is a solar term reflecting natural phenology. Every year from March 4th to 7th, when the sun reaches 345 degrees, it is a "fright". Sting means that when the weather gets warmer, the spring thunder begins to sound, awakening the insects that are dormant and hibernating underground. "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. " "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 average daily 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. Therefore, the working people in China have attached great importance to this solar term since ancient times and regarded it as the beginning of spring ploughing. There is a cloud in the Tang poetry: "A light rain brings new flowers, and a thunder starts. Tian Jia was idle for a few days, and farming began. Agricultural proverbs also say, "Spring ploughing can't stop after a scary festival" and "When all the flowers are in bloom, farm work will come together. "Winter wheat in North China began to turn green, and the soil was still freezing and thawing alternately. Leveling the ground in time is an important measure to reduce water evaporation. " Being surprised without harrowing the ground is like steaming steamed bread ",which is a valuable experience of local people in fighting drought and preserving moisture." Wheat in the south of the Yangtze River has been jointing and rape has begun to blossom. There is a high demand for water and fertilizer, so topdressing should be done in time, and proper irrigation should be done in dry and rainy places. Rain in the south can generally meet the needs of vegetables, wheat and green manure crops in spring, and it is most important to prevent wet damage. As the saying goes, "It's better to dump manure than to plow wheat with three pipes" and "If you want to harvest rapeseed, you must manage plowing diligently". We should continue to do a good job in ditch cleaning and drainage. We should pay close attention to sowing early rice in South China, and at the same time do a good job in cold prevention in rice fields. As the temperature rises, tea trees gradually germinate, so it is necessary to prune and apply "germination accelerating fertilizer" in time to promote more branches and leaves and increase tea yield. Peach, pear, apple and other fruit trees should be well fertilized before flowering. "Spring thunder startled", the warm climate conditions are conducive to the occurrence and spread of a variety of diseases and insect pests, and weeds in the field have also sprouted. It is necessary to do a good job in pest control and intertillage weeding in time. "Peach blossoms bring swine fever", and attention should also be paid to the epidemic prevention of poultry and livestock. The agricultural proverb "When it comes to thorns, the hoe never stops. "By the time of shock, most parts of China had entered the busy season of spring ploughing. Really: the season waits for no one, and every moment is worth a thousand dollars. In most areas, the average temperature of scary solar terms is generally 12℃ to 14℃, which is more than 3℃ higher than rainy solar terms, and it is the solar term with the fastest annual warming. The sunshine time has also increased significantly. However, due to the alternation of cold and warm air, the weather is unstable and the temperature fluctuates greatly. In the Yangtze River valley in the southeast of South China, the temperature in the warning period is stable above 65438 02℃ in most years, which is beneficial to the sowing of rice and corn. The average daily temperature in other areas is lower than 12℃ for more than three consecutive days, so it is not allowed to sow blindly early. Although the temperature rises rapidly, the increase of rainfall is limited. The total rainfall in central and northwest South China is only about 10 mm, and spring drought often begins after winter drought all the year round. At this time, the booting stage of wheat and flowering stage of rape are in a period of high water demand and are sensitive to water demand. Spring drought often becomes an important factor affecting the output of Koharu. Afforestation should also consider this climate feature, plant logistics and water, and strive to improve the survival rate of saplings. Reflecting the awakening of natural phenology, it refers to the sudden movement of spring thunder, which awakens the animals dormant in the soil and hibernating. 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 South China, except for a few years, it usually doesn't thunder until Tomb-Sweeping Day, which is the latest area where thunderstorms start in most parts of South China. Creeping season: spring is bright and everything is revived. Through careful observation and accumulation of phenological knowledge, it will help to arrange farming activities according to local conditions. After the shock, everything recovers. This is the spring season, but it is also the season when all kinds of viruses and bacteria are active. Calculation of the date of fright [y * d+c]-Interpretation of the L formula: the last two digits of the year are multiplied by 0.2422 and 5.63, and the whole number is subtracted from the leap year. C value 2 1 century horror =5.63. For example, in 2088, the date of fright = [88× .0.2422+5.63]-[88/4] = 26-22 = 4, and March 4th was a fright. Exception: None.