Traditional Culture Encyclopedia - The 24 Solar Terms - Does it rain in the north during the small full season? What are the weather characteristics of Xiaomanbei?
Does it rain in the north during the small full season? What are the weather characteristics of Xiaomanbei?
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Judging from the climatic characteristics, during the period from Xiaoman solar term to the next Mang solar term, all parts of the country entered summer one after another, and the temperature difference between the north and the south further narrowed. With the further increase of precipitation, severe weather such as rainstorm, thunderstorm, strong wind and hail is prone to occur.
The general scope of northern China, in a broad sense, refers to the area north of Qinling Mountains and Huaihe River, including Northeast China, North China and Northwest China; In a narrow sense, it is located in the north of Qinling-Huaihe River, east of Daxinganling-Wushaoling and east of Bohai Sea and Yellow Sea. Including all or most of the three northeastern provinces, five provinces and two cities in the middle and lower reaches of the Yellow River, and southeastern Gansu, Inner Mongolia, Jiangsu and northern Anhui.
For the northern region, the small rainfall is not as impressive as the rising temperature. Xiaoman solar term is often the one with the longest sunshine time among the 24 solar terms in the northern region, and the season of "giving some sunshine will be brilliant". The dry air in the north is much easier to heat than the humid air in the south, so when it is full, the temperature in some places in the north can easily rise suddenly and exceed that in the south.
During the solar term, winter wheat in the north has entered the key stage of yield formation, and it is necessary to strengthen fertilizer and water management in the later stage to prevent premature senescence of roots and leaves, promote full filling of winter wheat and improve grain weight; Areas with large moisture deviation should be irrigated in time to prevent the harm caused by high temperature and drought and "dry hot wind". In areas where there may be heavy rain and strong winds, do not water before the weather process to reduce wheat lodging.
Conclusion: There is another saying in the middle and lower reaches of the Yellow River: "Xiaoman is dissatisfied, and wheat is risky." This "one risk" means that wheat has just entered the stage of milk ripening at this time, and it is very vulnerable to dry and hot winds, which leads to insufficient grain filling, grain shrinkage and reduced yield. There are many ways to prevent dry hot wind, such as building shelterbelts and spraying chemicals, which are all very effective measures.
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