What are the characteristics and customs of the vernal equinox solar terms?

The spring equinox solar terms are more important among the 24 solar terms. Generally speaking, the vernal equinox represents the beginning of spring. Do you know the characteristics and customs of the vernal equinox and solar terms? Below I have sorted out the characteristics and customs of the vernal equinox and solar terms for everyone. I hope you like it!

Characteristics and customs of vernal equinox and solar terms

Features: Day and night are almost equal.

The spring equinox solar term is a very important solar term. In a day, the time of day and night is basically the same, which is the fourth of the 24 solar terms. 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, in ancient times, the vernal equinox was also called "the division of day and night". There are many interesting proverbs about this.

The custom of vernal equinox and solar terms

The mystery of vertical eggs

Why do eggs stand easily at the vernal equinox? Although there are many sayings, there are many scientific reasons. First of all, the vernal equinox is a day with the same length of day and night in the northern and southern hemispheres. The inclination of the earth's axis is 66.5 degrees, which is in a relatively balanced state with the earth's orbital plane around the sun, which is beneficial to vertical eggs. Secondly, the vernal equinox is in the middle of spring, which is lukewarm, colorful, comfortable, quick-thinking, agile and easy to succeed in laying eggs. More importantly, the surface of the egg is uneven and there are many protruding "hills". The height of "mountain" is about 0.03mm, and the distance between peaks is 0.5-0.8mm. According to the principle that three points form a triangle and a plane is determined, as long as three "mountains" and the triangle formed by these three "mountains" are found and the center of gravity of the egg passes through this triangle, the egg can stand upright. In addition, it is best to choose eggs 4 ~ 5 days after birth, because at this time, the yolk of the egg is slack, the yolk sinks, and the center of gravity of the egg drops, which is conducive to the erection of the egg.

Eat spring vegetables

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

the Spring Festival; Chinese New Year

At the vernal equinox in February, people began to sweep graves to worship their ancestors, also known as the Spring Festival. Before sweeping the grave, a grand ancestor worship ceremony should be held in the ancestral hall, pigs and sheep should be slaughtered, drummers should be invited to play, and the ritual students should read the eulogy and quote three praises. At the beginning of the spring equinox grave sweeping, the first thing is to sweep the graves of ancestors and distant ancestors. The whole family and the whole village have to be dispatched on a large scale, and the team often reaches hundreds or even thousands. After the ancestral graves of Kaiji and Yuanzu were swept, they were divided into rooms to sweep the graves of ancestors in each room, and finally each family swept the graves privately. In most Hakka areas, ancestor worship and grave sweeping in spring begin at the vernal equinox or earlier, and must end in Tomb-Sweeping Day at the latest. There is a saying everywhere that after the Qingming Festival, the tomb door is closed, and the ancestors' spirits are not needed.

Send spring cattle

The vernal equinox is coming soon, and there will be a picture of spring cattle delivered door to door. The picture is printed with red paper or yellow paper on the lunar solar terms all the year round, and also printed with farmers' ploughing patterns, which is called "Spring Cattle Map". The people who send pictures are folk singers, who mainly say things like spring ploughing and auspiciousness that are not against the farming season. Every time they go to a house, they say whatever they see until the owner is happy to give money. Although the words spoken are casual, every sentence rhymes beautifully. Commonly known as "spring", spring people are called "spring officials".

Weather characteristics of vernal equinox

aeolian sand

During the spring equinox of sandstorm, most of northwest China, northern North China and northeast China are still in the transition stage of winter and spring, with windy sunny days and cold at first sight. According to the statistics of sandstorm weather by Mr. Chao, director of the Meteorological Bureau, in recent six years, April is the most, followed by March, and spring is divided into 15 days, that is, from the end of March to the beginning of April. In these areas, dust blown by strong winds and floating dust at high altitude, especially air pollution caused by dust storms, have always been the focus of attention and become a hot topic at present.

low temperature

During the spring equinox, cold air constantly invades the south of China, and there will be low temperature weather in spring. At this time, the continuous rainy days will have a great impact on crops. If the average temperature is lower than 10 ~ 12℃ for more than 5-7 days, it may cause serious rice seedling rot. Because rice and cotton are both thermophilic crops, when the temperature is above 10 ~ 12 and the minimum temperature in sunny days is above 5℃, it is beneficial to all seedlings. Conversely, if there is low temperature and rainy weather, you can imagine. First frost is the product of cold wave and strong cold air in spring. In the case of warmer climate, cold waves are relatively rare, but we should not be careless.

Abnormal cold weather in early spring

In the cold spring and early spring, when the temperature rises rapidly, it will continue to be low for a while. This weather phenomenon is called late spring cold. In the south, the main influence of late spring cold is the rotten seedlings of early rice. In the north, it will affect the growth of peanuts, vegetables and cotton, and seriously cause the phenomenon of wheat seedling death. A very serious late spring cold occurred in the middle and lower reaches of the Yangtze River, just at the vernal equinox, that is, from late March to early April of 1976. The loss of grain seeds in Hunan, Jiangxi and Hubei provinces alone reached 700-800 million Jin.