"Suddenly, when Xia was established in the Ming Dynasty, he feared that spring would be even more from here." May 5 ushered in the summer festival. Does Lixia mean the beginning of summer? What are the changes in the weather and crops during this season? Meteorological and agricultural experts for you to "lixia say summer".
Zhang Yang, director of the Science Popularization Department of the Purple Mountain Observatory of the Chinese Academy of Sciences, introduced that Lixia is the beginning of summer in the astronomical sense. "From an astronomical point of view, spring, summer, autumn and winter can be divided according to the solar terms, and every 6 solar terms change a season. In the traditional Chinese twenty-four solar terms, Lichun is the beginning of spring, and correspondingly, Lixia is the beginning of summer. ”
However, the arrival of the Lixia festival does not mean that meteorologically it is really summer. Jiang Xiaodong, an associate professor at the School of Applied Meteorology at Nanjing University of Information Science and Technology, said that the standard for meteorology to start in the middle and summer is the first time in the year that the average daily temperature for five consecutive days is above 22 degrees Celsius. In this sense, when the summer festival comes, only Hainan, Guangdong, Guangxi, Yunnan and southern Fujian south of Nanling are in summer.
In addition, during the summer season, the high temperature and rainy weather in the south of the Yangtze River on the mainland are frequent, while the rainfall in the Huanghuai, North China and Northwest China regions north of the Qinling Mountains and huaihe river is still less, and the climate is dry.
In the "Interpretation of the Seventy-Two Waiting Collections of the Moon Order", it is recorded: "Xia, false also, and everything is false at this time." "This is to say that all things have grown up in the summer season. During this period, crops enter the peak growing season. Chen Longzheng, deputy director of the Vegetable Research Institute of the Jiangsu Academy of Agricultural Sciences, said that in the summer, barley, wheat and other crops that bloom in the spring enter the late stage of growth, rapeseed is close to maturity, the summer harvest crop is basically determined, and the early rice in the south has also begun to be planted. Therefore, ancient China attached great importance to the Lixia festival.
In the summer season, people often celebrate the harvest of early summer by tasting the freshness. The old saying has "Lixia taste fresh", some places taste amaranth, broad beans, pea rice and other "three fresh", and some places taste cherries, apricots, loquat and other "tree three fresh".
Coordinator: Liu Xinhui, Liu Zhaoquan
Reporters: Qiu Bingqing and Wang Jueyue
Editor: Li Min
Poster Maker: Xu Zhan
It was jointly produced by Xinhua News Agency and Jiangsu Branch
Produced by Seasonal Studio