What are the characteristics of Tomb-Sweeping Day gas? Introduction of climatic characteristics of Tomb-Sweeping Day gas.

What are the characteristics of Tomb-Sweeping Day gas? Introduction of climatic characteristics of Tomb-Sweeping Day gas.

Qingming is a solar term representing phenology, which means sunny weather and lush vegetation. As the saying goes, "Qingming breaks snow, Grain Rain breaks frost." When the weather is clear, the climate in South China is warm and the spring is strong. However, before and after Tomb-Sweeping Day, cold air still invaded from time to time, even making the daily average temperature lower than 12℃ for more than three consecutive days. In the northwest plateau, due to the cold winter, insufficient forage and weak resistance of livestock, it is necessary to guard against the harm of strong cooling weather to old, weak and young livestock after spring. "There are many rains during the Qingming Festival" is a portrayal of the spring rain in the south of the Yangtze River by Du Mu, a famous poet in the Tang Dynasty. But in some areas, this is not the case. Especially in the western part of South China, it is often in the spring drought period, and the rainfall in early April is generally only 10 to 20 mm, which is less than half of that in the south of the Yangtze River. Although there are many spring rains in eastern South China, the rainfall in early April is generally only 20 to 40 mm, so natural precipitation is not enough for agricultural production, so it must be replenished by storing water years ago. In addition, May-June is the month with the most hail in a year, so the prevention of hail disaster should be strengthened.

During the Qingming period, the average daily temperature in most parts of the country has risen to above 12℃ except the northeast and northwest regions. From north to south to the inside and outside of the Great Wall, there are busy scenes of spring ploughing everywhere. "In the Qingming Festival, the wheat grows for three days", the wheat in the south of Huanghuai is about to start heading, the rape has blossomed, and the wheat in the northeast and northwest regions has also entered the jointing stage. In the later stage, we should pay close attention to fertilizer and water management and pest control. Dry farming in the north, early and middle rice in the south of the Yangtze River is in a suitable season for mass sowing, so we should seize the opportunity, seize the sunny day and sow early. Pear blossoms are getting clearer and clearer. At this time, when many kinds of fruit trees enter the flowering stage, attention should be paid to artificial pollination to improve the fruit setting rate. Early rice planting in South China should be cleaned up and fertilized in time. Corn, sorghum and cotton will also be planted everywhere. "Before tomorrow's tea, there will be two buds", and the new buds of tea trees will grow vigorously, so attention should be paid to pest control; Famous tea producing areas are mined one after another, and strict scientific mining is needed to ensure the yield and quality.

Phenological characteristics of Qingming:

Wait: Tong Shihua

During the Qingming Festival, bloom is beautiful. In spring, everything recovers. In Tomb-Sweeping Day, the sun is more abundant, and all kinds of flowers are blooming.

In the eyes of the ancients, Bai Tong Bloom's life was a little later, just in the Qingming period, so it was regarded as a sign of the arrival of Tomb-Sweeping Day. Qingming, walking in nature, watching all kinds of flowers fade slowly, a place full of flowers, the instantaneous beauty is mud, which makes people sad. However, on another ramp, I suddenly saw a tall white paulownia tree standing in a small farmhouse under thin white clouds. The tree was full of purple and white bell-like flowers, full of fragrance in the leaves, which gave people a surprise and shock! This is the power of blooming, and it is also a touching part of life. No wonder the ancients had a soft spot for this kind of flower.

The second stage: voles become quails.

The vole hid back in the cave because of the strength of the sun, and the birds who love the sun began to come out and move.

The vole is the most yin thing, and the bird is the most yang thing. This means that the yin hides and the yang grows stronger. It can be seen that the sight of grass growing and warblers flying in spring conforms to the changes of nature.

Waiting for the third time: the first sight of the rainbow

It rains in Tomb-Sweeping Day, so there will be a rainbow.

In the beautiful spring, with the erosion of rain, the lush green leaves cover the bare soil and absorb the dust, beautiful rainbows can appear in the sky after the rain.