What does the rain solar term mean?

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The significance of rain solar terms

Rain is the second of the 24 solar terms.

You may be interested: What ancient poems are there in Rain Poems?

The significance of rain solar terms

Rain is the second of the 24 solar terms. Every February 19 or so, when the longitude of the sun reaches 330 degrees, it is the rain of 24 solar terms. At this time, the temperature rises, the snow melts and the precipitation increases, hence the name rain. The rain solar term generally starts from February 18 or 19 and ends on March 4 or 5. Rain, like Grain Rain, light snow and heavy snow, is a solar term reflecting precipitation.

Twenty-four solar terms: "In the first month, water is born every day. Spring belongs to wood, but there must be water for those who grow wood, so there is rain in beginning of spring. If the east wind melts, it will disperse into rain. " It means that everything begins to sprout before and after the rain and solar terms, and spring is coming. For example, Yizhoushu has phenological records such as "Hongyan coming" and "vegetation sprouting" after the rain.

It began to rain, and it gradually increased. The rainy season means that it begins to rain and the rainfall gradually increases. In the Yellow River valley, the birthplace of the 24 solar terms, it was cold before the rain, but it was snowing and raining unpleasantly. After the rain, the temperature can generally rise above 0℃, with less snow and more rain. However, in the warm southern region, even in the dead of winter, rainfall is not uncommon. The average temperature in most parts of southern China in this period is above 10℃, peaches and plums are in bud, and cherries are in full bloom. It has indeed entered a climatic spring.

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In addition to a few years, the frost period has come to an end. It is timely to graft fruit trees and plant trees. After a dry winter, there are many droughts in spring all year round in South China, especially in the western part of South China, where "spring rain is as expensive as oil". In addition, the invasion of cold wave will cause strong cooling and snowstorm, which will do great harm to the old, weak and young animals. These should pay special attention to prevention.

The cold and snow time has passed in most parts of the country, and it began to rain, and the rainfall gradually increased, which is conducive to the greening or growth of overwintering crops. It is necessary to pay close attention to the field management of overwintering crops and make good preparations for seed selection, spring ploughing, fertilization and other spring ploughing and sowing. Rainwater solar term 15 days, the rain came and the plants sprouted. We walked from the sixth day of "July 9" to the second day of "September 9". "There were 89 swallows in the July 9 River, and cattle were cultivated everywhere in September 9 and September 9", that is to say, except for most areas in the northwest, northeast and southwest plateaus, which are still in cold winter, many other areas are experiencing or have completed the transition from winter to spring.

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However, in the rainy season, cold air activities in the north are still frequent and the weather is changeable. Since we talk about the frequent cold air activities in the next season, we can't help but mention what people often say about "spring cover". This is the principle of dressing and keeping in good health put forward by the ancients according to the characteristics of spring climate change. In early spring, when the sun is shining and the climate is getting warmer, people gradually go to cotton and wear light clothes. But at this time, it is still cloudy and cold in the north, and the temperature changes greatly. Although the rainy season is not as cold as the winter, the human skin has become relatively slack, and the resistance to the evil of wind-cold will also be weakened, so it is easy to get sick by evil. So it makes sense to pay attention to "spring cover" at this time.