1. Seven-character quatrains
It's not sunny in summer, and you can hear the sound of green sand outside the window. After the typhoon left traces, crickets began to sing before the leaves were full. The wind blows lotus fragrance, and farmers rush to transplant rice seedlings in midsummer. The festival should come at the right time. Today's high temperature and rain are very cool. There are many cicadas in the evening and frogs croak in summer. Promote weaving to find coolness, and fish can understand the waves.
introduce
Summer is the twelfth solar term among the twenty-four solar terms and the last solar term in summer. The ecliptic of the sun is 120, which is from July 22nd to 24th in Gregorian calendar. "Summer heat" is heat, and summer heat is extremely hot. Summer heat is hotter than summer heat. Summer heat is the most intense and hottest solar term in a year, and "hot and humid steaming" reaches its peak at this time. Climatic characteristics of the great summer heat: high temperature and intense heat, frequent thunderstorms and typhoons.
The summer solar term is the hottest time of the year, just before and after the "midsection" of the "dog days". In summer, the sun is like fire, the temperature is high, the humidity is high, and there is much rain. Although it is inevitable to suffer from high temperature and humidity, it is very beneficial to the growth of crops, and crops grow fastest during this period.
Since ancient times, there has been a folk custom of drinking herbal tea (tea) in the dog days of midsummer; Fucha, as its name implies, is a kind of tea to drink in dog days. This kind of tea boiled with Chinese herbal medicine has the function of cooling and dispelling summer heat. In addition, there are customs such as burning incense and drying ginger. "Great Summer" is the hottest and wettest season of the year, and the focus of health care at this time is "heatstroke prevention" and "dampness elimination".
3. Historical origin
The summer heat is the twelfth of the twenty-four solar terms. The weather in Sri Lanka is much stronger than the slight summer heat, so it is called the great summer heat. "Summer heat" is heat, and summer heat is extremely hot. Yi Zhoushu said: "The earth is humid and hot (hot, which means humid and sultry). In five days, when it rains "; He also said, "Heavy rain comes from time to time, and the country is ungrateful."
The summer heat is the solar term with the strongest sunshine, the highest temperature and the most thunderstorms in a year. Summer solar terms, high temperature and heat, frequent thunderstorms and abundant rainfall are the seasons when everything grows wildly. "Twenty-four solar terms" said: "Summer heat can be divided into different sizes, with the beginning of the month small and the middle of the month large, which is still hot today."
4. Meteorological changes
The summer solar term is just around the Mid-Autumn Festival in the dog days, which is the strongest and hottest solar term in a year, and the "hot and humid steaming" also reaches its peak at this time. The summer heat is the season with the most thunderstorms and abundant rainfall. High temperature and rainy period are basically the same, and rain and heat are the same.
Monsoon climate is the main feature of China climate. In summer, affected by warm and humid air currents from the ocean, many places in China are hot, humid and rainy. At this time, the sun is fierce, the temperature is high, the humidity is high, and there is much rain. Although it is inevitable to suffer from damp heat, it is very beneficial to the growth of crops, and crops grow fastest during this period.