What is the significance of the solar terms after the shock?

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What is the solar term after the fright: vernal equinox

What is the significance of the solar terms after the shock?

You may be interested: what are the health care points of Jing Zhe Cao?

What is the solar term after the fright: vernal equinox.

The vernal equinox is the midpoint of 90 days in spring. One of the 24 solar terms, around March 20 of the Gregorian calendar every year, when the sun is located at 0 (vernal equinox) of the yellow meridian. On the vernal equinox, the sun shines directly at the equator of the earth, and the seasons in the northern and southern hemispheres are opposite. The northern hemisphere is the vernal equinox and the southern hemisphere is the autumnal equinox.

At the vernal equinox, theoretically, the world is as long as day and night (see the dawn). After the vernal equinox, the days in the northern hemisphere are getting longer and shorter, and the nights in the southern hemisphere are getting shorter and shorter. At the vernal equinox, there are no extreme days and nights in the world. After the vernal equinox, it began to be extremely daytime near the North Pole, and its scope gradually expanded. Near the Antarctic, the extreme day ends and the extreme night begins, and the scope gradually expands.

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The shocking significance of solar terms

Frightening solar terms are of great significance in busy farming. Since ancient times, the working people in our country have attached great importance to the solar term of fright and regarded it as the day when spring ploughing began. There is a cloud in the Tang poetry: "A light rain brings new flowers, and a thunder starts. Tian Jia was idle for a few days, and farming began. " Agricultural proverbs also say, "Spring ploughing can't rest, after the Scare Festival", "Let a hundred flowers blossom and farm work come together."

The agricultural proverb "When it comes to thorns, the hoe will not stop." At the moment of shock, most parts of China have entered the busy season of spring ploughing. Really: the season waits for no one, and every moment is worth a thousand dollars. In most areas, the average temperature of scary solar terms is generally 12℃ to 14℃, which is more than 3℃ higher than rainy solar terms, and it is the solar term with the fastest annual warming. The sunshine time has also increased significantly. However, due to the alternation of cold and warm air, the weather is unstable and the temperature fluctuates greatly. In the Yangtze River valley area in the southeast of South China, the temperature in the panic period is stable above 65438 02℃ in most years, which is beneficial to the sowing of rice and corn. The average daily temperature in other areas is lower than 12℃ for more than three consecutive days, so it is not allowed to sow blindly early.

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Although the temperature rises rapidly, the increase of rainfall is limited. The total rainfall in central and northwest South China is only about 10 mm, and spring drought often begins after winter drought all the year round. At this time, the booting stage of wheat and flowering stage of rape are in a period of high water demand and are sensitive to water demand. Spring drought often becomes an important factor affecting the output of Koharu. Afforestation should also consider this climate feature, plant logistics and water, and strive to improve the survival rate of saplings.

Winter wheat in North China began to turn green, and the soil was still frozen and thawed alternately. Raking the ground in time is an important measure to reduce water evaporation. "Shocking without harrowing is like steaming steamed bread", which is a valuable experience for local people to fight drought and conserve moisture. The ears of wheat in the south of the Yangtze River have been jointing, and rape has begun to blossom. There is a high demand for water and fertilizer, so topdressing should be done in time, and proper irrigation should be done in dry and rainy places.

Rain in the south can generally meet the needs of vegetables, wheat and green manure crops in spring, and it is most important to prevent wet damage. As the saying goes, "It's better to dump manure than to plow wheat with three pipes" and "If you want to harvest rapeseed, you must manage plowing diligently". We should continue to do a good job in ditch cleaning and drainage. We should pay close attention to sowing early rice in South China, and at the same time do a good job in cold prevention in rice fields. As the temperature rises, tea trees gradually germinate, so it is necessary to prune and apply "germination accelerating fertilizer" in time to promote more branches and leaves and increase tea yield. Fruit trees such as peaches, pears and apples should be fertilized before flowering.