The vernal equinox is one of the solar terms reflecting the changes of the four seasons. In ancient China, beginning of spring, Changxia, beginning of autumn and beginning of winter were used to indicate the beginning of the four seasons. The vernal equinox, summer solstice, autumn equinox and winter solstice are in the middle of each season. On the vernal equinox, the sun shines directly on the equator, and the time between day and night is equal all over the earth. Therefore, the ancient vernal equinox and autumnal equinox are also called "equinox", and there is a folk proverb that "vernal equinox and autumnal equinox are equally divided day and night".

After the vernal equinox, the overwintering crops in most parts of southern China entered the spring growth stage. In central China, there is an agricultural proverb, "Wheat starts at the vernal equinox, and every moment is worth a thousand dollars". The temperature in most parts of the south continues to rise, but generally it doesn't rain as fast as the vernal equinox. In late March, the average temperature in northern South China is mostly 13℃ to 15℃, and in southern South China it is mostly 15℃ to 16℃. Most of the plateau has been melted by snow, and the ten-day average temperature is about 5℃ to 10℃. Most areas in South China, such as river valleys, have the highest temperature, with an average of 18℃ to 20℃. In the south, except for the marginal mountainous areas, the average daily temperature rose steadily to above 12℃ in 1978, which is beneficial to planting crops such as rice and corn, and is also very suitable for afforestation. However, before and after the vernal equinox, there is often a strong cold air intrusion in South China, and the temperature drops obviously, as low as 5℃. Sometimes a small stream of cold air comes one after another, forming a low temperature and rainy weather that lasts for several days, which is not good for agricultural production. According to this feature, we should make full use of the weather forecast, grasp the cold tail and warm head, and sow in time.

The difference between beginning of spring and the vernal equinox: In ancient times, beginning of spring was mainly the beginning of the four seasons, while the vernal equinox was only a law indicating the movement of the sun. Adopt it.

What's the difference between beginning of spring and the vernal equinox?

China people summed up the most vivid "twenty-four solar terms" according to the law of climate change throughout the year, which is great wisdom in the process of human civilization. Because China is one of the oldest agricultural empires, the climate is too important for China people who depend on the weather for food.

The 24 solar terms are determined according to the solar calendar and have nothing to do with the lunar calendar.

Among the 24 solar terms, the most important ones are "Binfen", "Erzhi" and "Li Si".

First, the vernal equinox

Dichotomy refers to the vernal equinox and the autumnal equinox. Ancestors found that on a certain day in spring, a day is as long as a night, and day and night are equally divided, so this day is called the vernal equinox. Similarly, ancestors also found that the day in autumn is divided equally between day and night, so this day is called the autumnal equinox. "Divide" here means "share equally".

Second, beginning of spring.

Li Si refers to beginning of spring, Changchun, beginning of autumn and beginning of winter. "Li" means "Li" and "Jiang", which is a "vague concept" in time. It's not very accurate, but it's similar.

Take beginning of spring as an example. China has a vast territory and the climate varies greatly from place to place, so it is impossible to enter the spring on the same day. In early spring, the weather gets warmer obviously.

What do the arrival of beginning of spring and the vernal equinox represent respectively?

Simply put,

Beginning of spring represents the beginning of spring, and Channel 4 represents the beginning of spring, summer, autumn and winter. )

The vernal equinox, when the sun moves from south to north on the celestial sphere and reaches the intersection of the celestial equator and the ecliptic, is called the vernal equinox, which is the midpoint of spring in the northern hemisphere. The vernal equinox occurs on March 2 1 day, which is as long as day and night, so it is called the vernal equinox.

In detail, there are many.

The twenty-four solar terms are divided according to the position of the sun on the ecliptic (that is, the orbit of the earth around the sun). Depending on the sun starting from the vernal equinox (longitude zero, at this moment the sun shines vertically on the equator), every advance of 15 degrees is a solar term; After a week's operation, I returned to the vernal equinox, which is a tropical year with 360 degrees, so it is divided into 24 solar terms. The dates of solar terms are relatively fixed in the solar calendar. For example, beginning of spring in the solar calendar always falls between February 3rd and 5th. However, in the lunar calendar, the date of solar terms is not easy to determine. Take beginning of spring as an example. It can be the first day of the lunar calendar in the previous year, 65438+February 15, and the latest is the first month, 15.

It can be seen from the naming of the twenty-four solar terms that the division of solar terms fully considers the changes of natural phenomena such as seasons, climate and phenology. Among them, beginning of spring, Changxia, beginning of autumn, beginning of winter, vernal equinox, autumnal equinox, summer solstice and winter solstice are used to reflect the seasons, and a year is divided into four seasons: spring, summer, autumn and winter. The vernal equinox, autumnal equinox, summer solstice and winter solstice are divided from an astronomical point of view, reflecting the turning point of solar height change. Beginning of spring, Changchun, beginning of autumn and beginning of winter reflect the beginning of the four seasons. Because China is a vast country with a very obvious monsoon and continental climate, the weather and climate vary greatly from place to place, so the four seasons in different regions are also very different.

The five solar terms of slight summer heat, great summer heat, slight cold and severe cold reflect the change of temperature and are used to express the degree of heat and cold in different periods of the year; Rain, Grain Rain, light snow and heavy snow reflect the phenomenon of precipitation, indicating the time and intensity of snowfall; The three solar terms, White Dew, Cold Dew and First Frost, on the surface reflect the phenomenon of condensation and condensation of water vapor, but in essence reflect the process and degree of gradual temperature drop: when the temperature drops to a certain extent, water vapor condenses; The continuous drop in temperature not only increases condensation, but also gets colder and colder; When the temperature drops below zero degrees Celsius, water vapor condenses into frost.

Xiaoman and awn seeds reflect the maturity and harvest of related crops; Frightening and Qingming reflect natural phenology, especially stinging, which indicates that spring will return with the recovery of early thunder in the sky and underground stinging insects.

Beginning of spring, Changchun, beginning of autumn and beginning of winter-also known as "Li Si"-respectively represent the beginning of the four seasons. "Stand" means to start. The Gregorian calendar is generally around February 4th, May 5th, August 7th and165438+1October 7th every year. "Li Si" indicates the beginning of the astronomical season. As far as climate is concerned, it is still in the last season. For example, the Yellow River Basin in early spring is still in the middle of winter.

Summer solstice and winter solstice-collectively referred to as the "second solstice", represent the extremes of summer and winter in astronomy. "ambition" means extreme and most important. Summer solstice and winter solstice are generally on June 2 1 day and February 22 12 of the Gregorian calendar every year. It often rains on the solstice in summer.

The vernal equinox and the autumnal equinox-collectively referred to as "dichotomy", mean that day and night are equal in length. "Divide" is equal share. These two solar terms are generally around March 20 and September 23 of the Gregorian calendar every year.

Rain-indicates that the precipitation begins and the rainfall gradually increases. It rains around February 18 in Gregorian calendar every year.

Sting-the sudden movement of spring thunder woke the hibernating animals in the soil. At this time, the temperature rose rapidly, and the spring thunder gradually sprouted. Every year around March 5 of the Gregorian calendar is a shock.

Qingming-includes the meaning of sunny weather, fresh air, gradually warming climate and lush vegetation. The Gregorian calendar is Qingming around April 5 every year.

Grain Rain —— The increase of rainfall is very beneficial to the growth of cereal crops. Grain Rain is around April 20th of the Gregorian calendar every year.

Xiaoman-refers to the summer crops with full seeds, but not yet mature, just small and not yet full. Every year on May 2 1 day of the Gregorian calendar, it is full.

Crops with awns, such as awn seed wheat, mature and summer sowing begins. Around June 5 every year, it is a mango. The sky burns in the mountain.

Hot in summer, hot in summer, hot in summer-hot in summer means hot. The heat is not the hottest time, but the heat is the hottest season, and the heat is the day when summer is coming to an end. They are around July 7, July 23 and August 23 of the Gregorian calendar every year.

White dew-the temperature began to drop, the weather turned cold, and there was dew on the vegetation in the morning. The Millennium is around September 7 of the Gregorian calendar every year. ......

Is the vernal equinox the beginning of spring? The difference between beginning of spring and the vernal equinox.

These two are two different solar terms in the twenty-four solar terms! The vernal equinox refers to the day when the sun is at the equator! It's usually March 2 1! Beginning of spring usually means spring! Not solar terms!

The difference between the vernal equinox and beginning of spring.

These two are two different solar terms in the twenty-four solar terms! The vernal equinox refers to the day when the sun is at the equator! It's usually March 2 1! Beginning of spring usually means spring! Not solar terms!

Which is earlier, beginning of spring or the Equinox? why

Twenty-four solar terms: Spring rains shake the spring and clear the valley, and summer is full of heat. Autumn is as cold as ice, and winter is cold and cold. Of course, after beginning of spring's equinox, beginning of spring said that it will be spring in beginning of spring soon. The vernal equinox divides spring into two parts, and spring is already halfway through.

What does the vernal equinox mean?

The vernal equinox, also known as "Japan-China", "Day and Night Equinox" and "Midspring Moon" in ancient times, falls on March 19 ~ 22 every year, that is, on February 14 of the lunar calendar, and the sun reaches 0. According to the "Twenty-four solar terms": "In mid-February, it is divided into half, which is half of ninety days, so it is called minutes." Another article, Spring and Autumn Stories, Yin and Yang in and out, said: "At the vernal equinox, Yin and Yang are also half-phase, so day and night are cold and summer." There is a "Li Mingshi Yi" cloud: "The dividing line, the point where Huangchi intersects, the sun is here, and the day and night are equally divided." Therefore, the significance of the vernal equinox, first, refers to the equal division of day and night, each of which is 12 hours; Second, in ancient times, it was spring from beginning of spring to long summer, and the vernal equinox happened to be in the three months of spring, and spring was equally divided.

In ancient China, the vernal equinox was divided into three periods: "First, waiting for the arrival of birds; Two brave thunders are ringing; Third, wait for electricity. " In other words, after the vernal equinox, swallows will fly from the south, and when it rains, the sky will thunder and lightning. The vernal equinox is recorded in the ancient calendar of China: "Three days before the vernal equinox, the sun entered the equator."

March 19 ~ 22, a day in China calendar, that is, February 14 ("the vernal equinox should be on 14"), is the vernal equinox among the 24 solar terms, and the vernal equinox solar terms start when the sun runs to the longitude of 0 degrees (vernal equinox). A day is half of spring, so it is called vernal equinox. On the vernal equinox, the sun shines directly at the equator, and day and night are almost equal. Then the direct sunlight position gradually moved northward, and the days were long and the nights were short.

The farther the earth is from the equator, the smaller the noonday angle of the sun, and the less sunlight and heat it gets. Generally, March, April and May are spring in the northern hemisphere and autumn in the southern hemisphere.

During the spring equinox and solar terms, the East Asian trough is obviously weakened, and the trough ridge activity in the westerly belt is obviously enhanced. From Mongolia to the northeast, there are often low-pressure activities and cyclone development. Low-pressure movement causes cold air to go south, and it is windy and windy in the north. When the long wave trough moves eastward, there will be continuous rainy and cold weather due to the intersection of cold and warm air masses.

During the vernal equinox, the daily average temperature in all parts of China rose steadily to above 0℃ except the alpine mountain area and the area north of 45 north latitude. The severe cold has passed, and the temperature rises rapidly, especially in North China and Huanghuai Plain. The daily average temperature rises to above 10℃ almost at the same time as the rainy areas along the Yangtze River and the south of the Yangtze River, entering a bright spring. On the vast land, the willows are green on the shore, the grass is growing in Fei Ying, the wheat is jointing, the rape is fragrant, the peach blossom is red, Li Bai is welcoming the spring, and the yellow is yellow. South China is a scene of late spring. According to the climate law, the precipitation in Jiangnan increased rapidly at this time, and it entered the period of "peach blossom flooding" in spring; In the northeast, north and northwest regions where "spring rain is as expensive as oil", precipitation is still very little, so resisting the threat of spring drought is the main problem of agricultural production.

"Wheat rises at the vernal equinox, and every moment is worth 1000 yuan." In the northern areas with little rain in spring, we should pay close attention to spring irrigation, water saving and jointing fertilization, and pay attention to preventing late frost and freezing injury. South China still needs to continue to do a good job in drainage and flood prevention. Early rice seedling raising in Jiangnan and Jianghuai areas has started, and the weather changes frequently in early spring. Attention should be paid to soaking seeds to accelerate germination when cold air comes, and sowing in sunny days when cold air ends. The experience of the masses says, "A cold tail warms the head, so there is no need to worry about seedlings." According to the weather conditions, strive for 3-5 sunny days after sowing to ensure that all seedlings are sown at one time. Spring tea has begun to sprout, so it is necessary to apply quick-acting fertilizer to control pests and diseases in time and strive for high yield and high quality tea.

"February is the vernal equinox, and planting trees and fertilizing farmland is deep." The vernal equinox is also a good opportunity to plant trees. In ancient poems, there is a saying that "Niu Jiao girls started planting trees in the middle of the night, and it was the vernal equinox in the Ming Dynasty". In the hot busy farming season, we should continue to use our hands to green the mountains and rivers of the motherland and beautify our environment.

The vernal equinox is one of the solar terms reflecting the changes of the four seasons. In ancient China, beginning of spring, Changxia, beginning of autumn and beginning of winter were used to indicate the beginning of the four seasons. The vernal equinox, summer solstice, autumn equinox and winter solstice are in the middle of each season. On the vernal equinox, the sun shines directly on the equator, and the time between day and night is equal all over the earth. Therefore, the ancient vernal equinox and autumnal equinox are also called "equinox", and there is a folk proverb that "vernal equinox and autumnal equinox are equally divided day and night".

After the vernal equinox, the overwintering crops in most parts of southern China entered the spring growth stage. In central China, there is an agricultural proverb, "Wheat starts at the vernal equinox, and every moment is worth a thousand dollars". The temperature in most parts of the south continues to rise, but generally it doesn't rain as fast as the vernal equinox. In late March, the average temperature in northern South China is mostly 13℃ to 15℃, and in southern South China it is mostly 15℃ to 16℃. Most of the plateau has been melted by snow, and the ten-day average temperature is about 5℃ to 10℃. Most areas in South China, such as river valleys, have the highest temperature, with an average of 18℃ to 20℃. In the south, except for the marginal mountainous areas, the average daily temperature is once every seven or eight years. ......

What is the traditional significance of the vernal equinox?

Equinox has two meanings. First, it refers to "vernal equinox and autumnal equinox, which are equally divided day and night". On the vernal equinox, the sun shines directly on the equator, which is almost equal to the length of day and night in the world, that is, the time of day and night is equal, which is 12 hour. At this time, after half a year of darkness, the North Pole saw the sunshine for the first time on this day, and the corresponding South Pole will also bid farewell to the sunshine on this day. After the vernal equinox, the position of the direct sunlight point moves to the north, and the day time in the northern hemisphere becomes longer and the night time becomes shorter, but the difference is that the day time in the southern hemisphere becomes shorter and the night time becomes longer. The second refers to "season sharing". If the period from the beginning of spring to the long summer is regarded as spring, then the vernal equinox is the midpoint of spring, which just divides spring equally. It is exactly ninety days from beginning of spring to Changchun, and the vernal equinox is divided into two, hence the name vernal equinox. For example, in 2006, the interval between the vernal equinox on February 4th and beginning of spring was 45 days, and the interval between the vernal equinox and the long summer on May 5th was just 45 days. The vernal equinox is also a traditional festival. In ancient China, beginning of spring, Changxia, beginning of autumn and beginning of winter were used to indicate the beginning of the four seasons.