When is summer?

On May 5 or 6 every year, when the sun reaches 45, it is the "long summer" solar term. China has been used to long summer as the starting date of summer since ancient times. In the twenty-four solar terms, it is said: "We must also stand" and "Summer is also a holiday, and everything is a holiday at this time." "False" means "big" here. In fact, according to climatological standards, the daily average temperature has steadily risen above 22℃, starting from summer.

In what month is summer? When is summer?

Spring, summer, autumn and winter are called four seasons. There are different standards for the division of the four seasons. The following are some common divisions: First, in astronomy, the vernal equinox (March 1 or so), summer solstice (June 22nd or so), autumn equinox (September 23rd or so) and winter solstice (February 65438+2 1 or so) are regarded as the beginning of the four seasons respectively. 2. China ancient books: beginning of spring (around February 4th), Changxia (around June 5th), beginning of autumn (around August 8th) and beginning of winter (around165438+1October 8th) are often used as the beginning of the four seasons. 3. Climate statistics: Generally, 65438+ 10 is the hottest month in Leng Yue, so March, April and May are spring, June, July and August are summer, and September 10,1is autumn. This method of dividing the four seasons is more suitable for temperate regions with four distinct seasons, and our city belongs to subtropical maritime monsoon climate zone, so this method is not applicable. Fourth, the waiting temperature method: 1934, Chinese scholar Zhang Baokun combined phenology with agricultural production and put forward another seasonal method. It starts in winter when the average temperature keeps falling below 10℃ and in summer when the average temperature keeps rising above 22℃. When the average temperature rises steadily from below 10℃ to above 10℃, it is regarded as beginning of spring. Autumn begins when the temperature drops steadily from above 22 degrees Celsius to below 22 degrees Celsius. That is, the average temperature in winter is less than10℃; Spring10 ~ 22℃; Summer ≥ 22℃; In the autumn of 22 ~ 10℃, this seasonal method can be combined with the specific climate and agriculture in various places, so it is used more. According to the above methods, there is no obvious "winter" in our city. Seasonal division index: when the average temperature is lower than 10℃ in winter; The average temperature in summer is more than 22℃, and the average temperature in spring and autumn is 10℃ ~ 22℃. The average climate temperature reaches 10℃, which is roughly consistent with the date when peach blossoms first bloom and willow trees turn green. When the average temperature reaches 22℃, cicadas sing sweetly, which is a sign of entering summer; When the average temperature drops below 22℃, as the date of going to Qiu Lai in summer, it is consistent with the scene of swallows coming from south to autumn. The four seasons are distinct, winter is Changchun and autumn is short, winter and summer are about four months, and spring and autumn are about two months. The start date of the four seasons varies from place to place.

When does the dog days in summer start to count?

Summer dog days are calculated according to the lunar calendar date; Every day of the lunar calendar is recorded by heavenly stems and earthly branches, who is 60 years old, that is, ten days of dry A, B, C, D, E, G, and Gui; Twelve earthly branches: Zi Ugly Mao Yinchen applied for blessing at noon, and Zi Jia, Yi Ugly, Bing Yin,,,,,,,, can be found in the phonetic notation of the 60-year-old son of the lunar calendar, as well as the date of the summer solstice of the lunar calendar, and then checked every day according to the arrangement of the branches and branches of the lunar calendar above. From summer to the third Geng day, it is the first volt, that is, every ten days.

When is summer?

In ancient China, the summer solstice was divided into three phases: "The first phase of staghorn dissolution; Second, wait for cicadas to start singing; Third-class Pinellia ternata. " Although Mi and Lu belong to the same family, the ancients thought they belonged to Yin and Yang. The deer's horn faces forward, so it belongs to Yang. On the solstice of summer, Yin Qi was born, and Yang Qi began to decline, so the front antlers began to fall off. Because mi belongs to yin, it falls in the corner of winter; After the solstice of summer, the male cicada fluttered and sang because of Yin Qi's feeling; Pinellia ternata is a shade-loving herb, named after it was born in swamps or paddy fields in midsummer. It can be seen that in the hot summer, some yin-loving creatures began to appear, while positive creatures began to decline.

China folks divide 15 days from summer to the future into three "hours", usually the first three days, the middle five days and the last seven days. During this period, the temperature in most parts of China was high, the sunshine was sufficient, the crops grew rapidly, and the physiological and ecological water demand was high. At this time, the precipitation has a great influence on agricultural output, and there is a saying that "raindrops are worth tens of millions in summer solstice". In general, the precipitation in the middle and lower reaches of the Yangtze River and Huanghuai area can generally meet the requirements of crop growth. The Chronicle of Jingchu's Age says: "It rained on June 3rd, and the Tian family thought it was sweet, and the whole city congratulated each other." It can be seen that as early as 1000 years ago, people had a clear understanding of the characteristics of this rainfall.

From summer to around, early rice heading and flowering in the south of Huaihe River, field water management should be fully water heading, wet irrigation, dry and wet, which not only meets the water demand of rice fruiting, but also can ventilate and nourish roots, ensure maturity and improve grain weight. As the saying goes, "Summer broadcast is not allowed for noon", we should pay close attention to the completion of summer broadcast, strengthen the management of broadcast content, and strive for full seedlings. After the seedlings emerge, they should be spaced, fixed and transplanted in time to make up for the deficiency. During the summer solstice, all kinds of weeds in farmland grow as fast as crops. They not only compete with crops for water, fertilizer and sunlight, but also parasitize various germs and pests. Therefore, the agricultural proverb says, "If you don't hoe the roots and weeds in the summer solstice, it's like raising a poisonous snake to bite you." Grasping intertillage and hoeing is one of the important measures to increase production from summer solstice. Generally, cotton has germinated, and its vegetative growth and reproductive growth are vigorous. Attention should be paid to ridging, intertillage and ridging in time, and ditch cleaning and drainage should be done in the field in rainstorm areas to prevent the harm of waterlogging and rainstorm.

"However, the summer solstice is not hot." "The summer solstice is already three years old." Although the summer solstice indicates that the hot summer has arrived, it is not the hottest time. After the summer solstice, the temperature will continue to rise for some time, and about twenty or thirty days is the hottest weather.

Climatic characteristics

The summer solstice is the tenth of the twenty-four solar terms. To, it means extreme, that is, the sun grows to the extreme. On this day (northern hemisphere), the day is the longest and the night is the shortest, and the weather begins to get hot. Every year around June 2 1 day, when the sun reaches 90 (summer solstice). "Twenty-four solar terms" said: "In mid-May, summer is fake. At the extreme, everything here is fake and extreme." Cui Lingen's explanation of Han Xuetang in "Three Rites and Righteousness" also says: "Summer is one of the three meanings; First, yin and yang are extremely strong. Second, the beginning of Yang Ming is the beginning. Third, tomorrow's trip to the north. Therefore, it is the best. " On this day, the height of the sun is the longest, the sun is almost direct to the Tropic of Cancer, and the day is the longest and the night is the shortest in the northern hemisphere. From summer to the future, the direct sunlight position gradually moves southward, and the daytime begins to shorten day by day. The southern hemisphere is the opposite. Astronomy stipulates that summer solstice is the beginning of summer in the northern hemisphere, and climatology takes the beginning day when the average temperature is higher than 22℃ every five days as the beginning of summer. After the summer solstice, the temperature in the north is high, the sunshine is sufficient, and the rain increases, which is beneficial to the growth and development of crops. The middle and lower reaches of the Yangtze River are still in the rainy season, and there are often long-lasting and heavy rainfall, which causes floods and even threatens people's lives and property. Attention should be paid to strengthening flood control. After the summer solstice, crops grow vigorously and weeds and diseases spread rapidly, so it is necessary to strengthen field management. Therefore, the agricultural proverb says: "The summer solstice is in the dog days, and the cultivated land competes for water to water the garden"; The solstice and June of summer should be the first golden season.

When is the real summer?

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When is summer?

The long summer (usually on May 5th or 6th) lasts from early May to early August, before beginning of autumn (usually on August 8th).

When is summer?

In summer, it calls June, July and August, when the climate is hot, summer. It starts every year around May 5th when the sun reaches 45 degrees of the yellow meridian. Meteorologically, the real arrival of summer is when the average temperature reaches 23 degrees Celsius in five days. China used to regard the long summer as the end of spring and the beginning of summer.

When does summer end?

Dear Xiao, don't worry about when this summer will pass. Enjoy this summer, okay? This is the * * * summer that everyone is crazy about. This is my favorite season. If someone's words can ruin Xia's family, he is a sinner. And a woman wasted a summer because of that sentence. She is also a sinner. You got it? Hey, you won't be lonely with us.

When is the first light in summer?

360 weather, there is an accurate sunrise and sunset time every day, just locate the city.

When did summer begin?

In the middle and late August! I don't know if you are from the north, but that's the way it is in the north. It's a little cold in the morning and evening in September, so you may have to wear long sleeves. Few people have bought short sleeves. My friend is also from the night market, so I know something! I hope I can help you!