The beginning of summer is the seventh of the 24 solar terms. It is a complete transition from spring to summer, which means that the hot summer is coming and thunderstorms begin to increase. So when is the beginning of summer this year? The solar term is usually on May 5 or 6 or 7 every year.
When is the beginning of summer in 2019
The solar term Lixia was established at the end of the Warring States period (239 BC), indicating the change of seasons and the beginning of summer in the four seasons of the year. In fact, according to the standard of climatology, if the daily average temperature rises above 22 ℃ steadily, it is the beginning of summer. Before and after the beginning of summer, only the area south of Fuzhou to Nanling line is the real summer with dense green trees and long summer days, and the buildings reflect into the pond. However, some areas in Northeast and northwest are just entering spring, and the average temperature in most parts of the country is around 18-20 ℃ It's the mid spring and late spring season of all kinds of flowers. In May, many places are also in bloom. At the beginning of summer, everything flourishes.
The beginning of summer in 2019 is Monday, May 6, 2019, and the lunar time is the second day of April.
The beginning of summer, April Festival. There is a spring in the interpretation of Chinese characters. Summer, vacation. At this time, all things are false.
The sound of the mole. Mole cricket, insect, born in the soil, good night out, today's people call the dog is also; a mole cricket, a stone mouse, a bird [Yinhu], different dialects. "Huainanzi" said: Mole song, Qiu Yi out, Yin Qi and two things should be. Xia Xiaozheng: in March, the song is also. And there are five skills, can not become a skill: flying can not cross the house; edge can not poor wood; swimming can not cross the valley; acupoints can not cover the body; walking can not be ancestors. Therefore, Shuowen called him the rat of five skills. In gujinzhu, the name of mole is "Xiao", which is known as "rat". The two books all think of bedbugs, while Lu Deming and Zheng Kangcheng think of frogs.
Earthworms come out. Earthworm is the Earth Dragon, which is also called Quyu. According to the interpretation of the calendar, those who bend in Yin can see in Yang.
Wang guasheng. According to the book of pictures, Wang Gua can be found everywhere. In his life, he lived in fields, houses and walls. His leaves were like Trichosanthes kirilowii and black medicine. He was round without any deficiency. His hair was like thorns. He had yellow flowers in May, and his seeds were like pellets. He was green, ripe and red. His roots were like Pueraria lobata. He was also known as local melon. He was also known as Luoya melon. Zheng Yuan's annotation in the book of rites says: that is to say, Li Qi. In the book of Materia Medica, Tao lived in seclusion to distinguish the absurdity of Smilax China. He said that Smilax China has its own article, but Wang Gua also has its own article. It was ridiculous for the Confucians to abuse words without checking the book.
"Yizhoushu & middot; shixinjie" says: "on the day of the beginning of summer, mole crickets sing. Another five days, the earthworm came out. Five days later, Wang guasheng. That is to say, in this solar term, we can first hear the clam (i.e. mole beetle) chirping in the field (i.e. frog), then we can see the earthworm digging in the earth, and then the vine of the king melon begins to climb and grow rapidly, which describes the phenological scene at the beginning of Mengxia.
It is written in the book "Lotus born eight killers" of Ming Dynasty: "on the day of Mengxia, heaven and earth begin to intersect, and all things are in harmony. At this time, the summer harvest crops enter the late growth stage, the winter wheat is flowering and filling, the rape is nearly mature, and the year of the summer harvest crops is basically certain, so the agricultural proverb has the saying of "start summer and watch Summer". The management of rice planting and other spring sowing crops has also entered a busy season. Therefore, China attaches great importance to the Lixia solar term in ancient times. According to records, on the day of the beginning of summer in the Zhou Dynasty, the emperor personally led a hundred civil and military officials to the suburbs to welcome the summer, and instructed situ and other officials to go to various places to encourage farmers to work hard.
In the chapter of the book of rites, it is explained that the beginning of Xia Dynasty said: 'mole crickets sing, earthworms come out, Wang guasheng, bitter vegetables show. It means that at this time of the year, mole beetles are beginning to clamor about the coming of summer, earthworms are also busy helping farmers to loosen the soil, and the wild vegetables on the rural ridges are competing with each other to grow day by day.
According to the standard of climatology, the steady rise of daily average temperature above 22 ℃ is the beginning of summer. Before and after the beginning of summer, only the areas south of Fuzhou to Nanling line enter summer, while some areas in Northeast and northwest just enter spring. The average temperature in most parts of China is around 18-20 ℃.
At the beginning of summer, the temperature in the north and south of China is quite different, and fluctuates frequently in the same area. The temperature in the rest of South China is about 20 ℃, while the temperature in the low altitude Valley is hot as early as the middle of April, and the temperature has reached above 24 ℃. Therefore, it was also a period of frequent crop diseases and insect pests and a period when people were prone to catch cold. As zuohe said: 'the south is like the summer, the north is like the spring, and the trees in the Yangtze and Huaihe rivers are green. When the disease when the insect people scatter medicine, cold and heat medicine keep out people. '