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Climatic characteristics and custom activities of autumnal equinox
The autumnal equinox divides day and night equally, and the sun is on the horizon all day, which also symbolizes the joy of autumn harvest. After that, as the direct point of the sun continued to move southward, a six-month polar night began near the North Pole, which gradually expanded and then narrowed. A six-month polar day begins near the South Pole. This time, I sorted out the climate characteristics and customs activities of the autumn equinox for your reference.

Autumn equinox solar terms customs activities Autumn equinox solar terms customs 1, autumn festival to the moon

The autumnal equinox used to be the traditional "Festival of Sacrificing the Moon". For example, in ancient times, there was a saying that "the sun is sacrificed in spring and the moon is sacrificed in autumn". Now Mid-Autumn Festival comes from the traditional Mid-Autumn Festival. According to textual research, the original "Moon Festival" was set on the day of "Autumn Equinox", but there is not always a full moon because of the different days of August in the lunar calendar every year. And the moon without the moon is a big spoil the fun. Therefore, the Mid-Autumn Festival was later transferred from the Equinox to the Mid-Autumn Festival.

According to historical records, as early as the Zhou Dynasty, ancient emperors had the custom of offering sacrifices to the sun at the vernal equinox, to the earth at the summer solstice, to the moon at the autumnal equinox, and to heaven at the winter solstice. Its places of worship are called Ritan, Ditan, Yuetan and Tiantan. It is located in four directions: southeast and northwest. So far, there are many historical sites in China, such as Yue Bai Altar, Moon Pavilion and Moon Tower. The folk custom of offering sacrifices to the moon varies from region to region.

The "Moon Altar" in Beijing was built during the Jiajing period of the Ming Dynasty, and was used for royal sacrifice to the moon. "The Year of China in Beijing" records the custom of offering sacrifices to the moon in Beijing, saying: "On the night of Mid-Autumn Festival, people set up the symbol of the Moon Palace, and rabbits stood on it like people; Chen Guaguo was in court; The cake surface is painted with the moon palace toad rabbit; Men and women worship incense and burn it. " There is also a special custom of offering sacrifices to the moon in Beijing, that is, "Men don't offer sacrifices to the moon, but worship more", that is, as the folk proverb says, "Men don't Yue Bai".

Autumn equinox solar terms custom 2, eat autumn vegetables

In Lingnan area, Xie's family in Cangzhen, Kaiping used to be four cities (now Heshan is five cities), and there is an unbroken custom called "eating autumn vegetables at the autumnal equinox". "Autumn vegetable" is a kind of wild amaranth, which villagers call "autumn Artemisia". On the autumnal equinox, the whole village went to pick autumn vegetables. When searching in the wild, it is often green and thin, about the length of a palm. Picked autumn vegetables are usually boiled with fish fillets at home, which is called "autumn soup". There is a jingle: "autumn soup is dirty, wash the liver and intestines." The whole family is safe and healthy. "Since autumn, people still pray for peace and health at home.

Amaranth contains many nutrients. Rich carotene and vitamin C help to enhance human immune function and improve the anti-cancer effect of human body. Fried amaranth has the effects of detoxification, diuresis, analgesia and eyesight improvement. Eating it can enhance the ability of disease prevention, be healthy and less sick, and moisturize and beautify. It is suitable for dysentery, conjunctival congestion, sparrow blindness, breast abscess, hemorrhoids and other diseases.

In fact, the so-called "autumn soup" in Lingnan customs is consistent with the autumn tonic advocated by Chinese medicine, but Lingnan customs are typical and a little rustic, and have not risen to the height of Chinese medicine theory.

Fruit 1, grapes in the autumn equinox

Grape is a kind of fruit that people like because of its beautiful color, fragrant smell, sweet and sour taste, appetizing and digestion. At the same time, grapes are rich in nutrients, not only containing a lot of glucose and fructose, but also containing amino acids, vitamin C, calcium, iron and other nutrients. Among them, many polyphenols, such as proanthocyanidins and anthocyanins, have excellent antioxidant properties, which are 65433 higher than vitamin C.

Step 2 water chestnut

Water chestnut, also known as horseshoe, has the reputation of "underground Sydney". Water chestnut tastes sweet and cold, has the effects of clearing away lung heat, relieving sore throat, eliminating dampness and resolving phlegm, and has certain effects on preventing autumn dryness, cough, throat discomfort and thirst. Besides raw food, it can also be boiled, fried, roasted and simmered. However, water chestnut is not easy to digest, and people with deficiency of spleen and stomach and poor digestive function, children and the elderly should not eat more.

3. Lemon

Chinese medicine believes that lemon tastes sour, slightly sweet, slightly cold, and enters the lungs and stomach. According to nutrition, lemon contains sugar, citric acid, malic acid, citric acid, hesperidin, naringin, vitamin B 1, vitamin B2, vitamin C, nicotinic acid, calcium, phosphorus and iron. Lemon can clear away heat, relieve summer heat, promote fluid production, quench thirst, resolve phlegm and relieve cough.

4.pierce

Sydney is a cold fruit, which has the effect of moistening dryness and reducing fire. When autumn is dry, eating pears is the best choice. Pear is known as the "Sect of Hundred Fruits". Autumn climate is dry, people often feel dry nose and mouth, itchy skin, prone to dry cough, less phlegm and other discomfort. At this time, eating one or two pears a day can effectively relieve autumn dryness and is good for health.

5.sugar cane

Sugarcane has the effects of clearing away heat and moistening dryness, promoting fluid production and quenching thirst, and detoxifying and penetrating rash. In autumn, yin deficiency and lung dryness lead to cough, and eating sugar cane is the most suitable. Sugarcane juice is sweet and the best fruit. According to the analysis, the juice of sugarcane accounts for about 70%, and the sugar content can reach 17%, so it has the reputation of "syrup warehouse". The sugar contained in it is mostly sucrose, followed by glucose and fructose.

6. Fresh dates

Autumn is the best date-eating season in a year. Fresh jujube is rich in iron that makes skin rosy, and also contains a lot of vitamin C. Vitamin C is the best weapon against free radicals and aging, which can reduce melanin and inhibit melanin production, fade spots and pigmentation, and improve skin color.

7.hawthorn

Hawthorn is also known as a "small expert" for lowering blood pressure and cholesterol because it contains triterpenoid acids and flavonoids. Chinese medicine believes that hawthorn is sour and sweet, slightly warm, which can help digestion, strengthen stomach, promote qi and blood circulation, stop dysentery and lower blood pressure. Raw hawthorn also has the function of eliminating body fat and reducing fat absorption. People who lose weight can eat more.

8.pomegranate

Pomegranate is not only delicious but also nutritious. Pomegranate is rich in water-soluble dietary fiber, which will not be decomposed by enzymes in human digestive tract. It can not only prevent constipation, but also relieve diarrhea. Eating pomegranate is not unpleasant, and it can regulate gastrointestinal function and help digestion in two ways. Pomegranate seeds are rich in vitamin C and polyphenols, which can delay aging.

Climatic characteristics of the autumnal equinox In ancient China, the autumnal equinox was divided into three periods: "When thunder came, the sound stopped; Second, wait for scorpion blank households; Wait for the water to dry. "The ancients thought it thundered because the sun be the spirit is strong, and the yin began to fill after the autumnal equinox, so it didn't thunder.

According to the lunar calendar, "beginning of autumn" is the beginning of autumn and ends with "the first frost", and the "vernal equinox" is just half of the 90-day journey from beginning of autumn to the first frost. At the autumnal equinox, the Yangtze River basin and its vast northern area have entered autumn, and the daily average temperature has dropped below 22℃.

The cold air mass in the north began to have some influence. In most areas, the rainy season has just ended, with a cool breeze blowing gently, the sky is high and the clouds are light in Wan Liqing, the air is crisp in autumn, the sweet-scented osmanthus is fragrant, the crab is fat and the chrysanthemum is yellow, and the autumn equinox is a beautiful and pleasant season. It is also an important solar term in agricultural production. After the autumnal equinox, the direct sunlight moved to the southern hemisphere, and the northern hemisphere got less and less solar radiation, while the ground lost more heat and the temperature dropped significantly.

Agricultural proverbs say: "An autumn rain is a cold", "The white dew is divided into autumn nights, and one night is cold". "In August, the wild goose gate opens, and the foot of the wild goose is frosty." It is not surprising that the temperature in Northeast China drops early and frost appears at the autumnal equinox. On the day of the autumnal equinox, the sun is located at the longitude of the yellow meridian 180 degrees, and the sunlight is almost direct to the equator, and the length of day and night in most parts of the world is almost the same. At this time, the waiting temperature in the southern region has generally dropped below 22℃, and it has entered a cool autumn. "An autumn rain and a cold". The cold air from the south meets the warm and humid air that gradually decays, which leads to repeated rainfall and the temperature drops again and again.

In the northern part of the northwest plateau, the daily minimum temperature has dropped below 0℃, and you can already see the magnificent snow scene flying all over the sky and the earth wrapped in silver. It is rainy and humid in autumn in the south and Liangshan Prefecture, which has great influence on autumn harvest, autumn ploughing and autumn planting. It is necessary to grasp the sun, control soil moisture and prevent waterlogging, and do a good job in the quality and progress of Sanqiu production. At the same time, we should make full use of the meteorological conditions of rainy autumn and good soil moisture, seize the opportunity to do a good job in afforestation, and strive to improve the survival rate of saplings.

Since the autumnal equinox, the climate has three main characteristics:

1. The position of direct sunlight continues to move from the equator to the southern hemisphere. In the northern hemisphere, the day is shorter than the night, and the phenomenon of short days and long nights will become more and more obvious (until the winter solstice reaches the longest night and the shortest day);

2. The temperature difference between day and night will gradually increase, and the amplitude will be higher than10℃;

The temperature drops day by day, getting colder and colder, and gradually entering the late autumn season. The situation in the southern hemisphere is just the opposite.

Is the autumn equinox autumn? According to the standard of dividing seasons according to the average climate temperature, it must be that the average temperature is lower than 22℃ for five consecutive days before autumn is considered. According to this standard, the Jianghuai area generally enters autumn in the middle and late September. After beginning of autumn, although the summer heat is hard to disappear for a while, although there is the afterglow of "autumn tiger", the general trend is that the weather is getting colder and colder. The autumnal equinox solar terms really entered autumn. The temperature began to plummet, getting colder and colder.

The autumnal equinox is the sixteenth of the twenty-four solar terms, and it usually falls on September 22nd or 23rd every year. The climate in the south began to decline from this solar term. The climate of the autumnal equinox At the autumnal equinox, most parts of China have entered a cool autumn. The cold air from the south meets the warm and humid air that gradually decays, resulting in continuous precipitation and the temperature dropping again and again. As people often say, it's time for an autumn rain and a cold.

Articles on the climatic characteristics and customs of the autumnal equinox;

★ Characteristics and customs of solar terms in vernal equinox

★ The origin and customs of beginning of spring in the twenty-four solar terms.

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★ The meaning of the 2022 solar term of Mangzhong.

★ What are the auspicious meanings and implications of cold dew?

★2022 geography exam must recite knowledge points.

★ Introduction and characteristics of solar terms in autumnal equinox

★ Characteristics of solar terms and climate in autumnal equinox

★ What are the customs and activities of the autumnal equinox solar terms?

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