The origin and characteristics of the rainy season What are the origin and characteristics of the rainy season?

1, the origin of rain

The origin of the rainy season is also very long, rain is the 2nd of the 24 solar terms. Every year around February 19, when the sun's yellow longitude reaches 330 degrees.

Rainwater is the rain of the 24 solar terms. At this time, the temperature rises, snow and ice melt, and precipitation increases, so it is named rain. The rainy season usually starts on February 18th or 19th and ends on March 4th or 5th. Like Guyu, Xiaoyue and Daxue, Yushui is a festival that reflects the phenomenon of precipitation.

On the Gregorian calendar, around February 18 each year for the rainy season, when the sun reaches 330 degrees of the yellow longitude, for the delivery of the "rainy" season. Rain, said two meanings, one is the weather is warming up, the amount of precipitation gradually increased, and the second is in the form of precipitation, snow less and less, rain more and more, "the month of 72 wait for a collection of explanation" said: "the first month, the sky is a life of water. Spring is the beginning of the wood, but the wood must be water, so the spring following the rain. And the east wind is thawed, then scattered for rain."

The rainy season, wheat has entered the stage of rejuvenation.

2. Characteristics of the festival

The rainy season generally begins on February 18 or 19 and ends on March 4th or 5th. The sun's point of direct sunlight from the southern hemisphere gradually to the equator close to the northern hemisphere, the number of hours of sunshine and the intensity of the increase in temperature rebound faster, from the ocean's warm and humid air began to be active, and gradually to the north. At the same time, the cold air in the weakening trend is not willing to show weakness, and warm air frequent contest, neither willing to withdraw from the leading position, but also refused to collect the remaining cold.

Rainfall begins, and the amount of rain gradually increases. The meaning of the rainy season is the beginning of rainfall, rainfall gradually increasing, in the Yellow River basin, the origin of the twenty-four seasons, the weather before the rain is cold, but see the snowflakes flying, it is difficult to hear the sound of rain pattering. After the rain, the temperature usually rises above 0℃, and the snow decreases while the rain increases. However, in the warm climate of the southern region, even in the middle of winter, rainfall is not rare. Most areas in the south of China during this period of time the average temperature is more than 10 ℃, peach and plum buds, cherry blossoms, indeed has entered the climate of spring. In addition to individual years, the frost period to this point also ended. Grafting fruit trees, reforestation, it is time. South China following the winter dry, perennial spring drought, especially in western South China is the spring rain is as expensive as oil. Agriculture should pay attention to moisture conservation, timely watering to meet the wheat plucking pregnant spike, rapeseed moss blossom water critical period of water supply. Northwest plateau mountains are still in the dry season, the air temperature is small, wind speed, prone to forest fires. In addition, the cold wave invasion can cause strong cooling and blizzard, the old, weak, young animals are very harmful. All these, special attention should be paid to prevention.

Rain indicates not only the beginning of rainfall and its increase, but also the rise in temperature. Before the rain, the weather is relatively cold. After the rains, people clearly feel the return of spring, the blossoming of spring flowers and spring in the world, and the refreshing scent that inspires the body and mind.

Most of the country's cold and snowy time has passed, the rain began to rain gradually increased, conducive to the overwintering crops to return to the green or growth, grasp the overwintering crops field management, do a good job of selecting seeds, spring plowing, fertilizer and other preparations for spring plowing and spring sowing. In the rainy season of 15 days

Rain to, grass and trees sprouting, we went from the "seven nine" of the sixth day to the "nine nine" of the second day, "seven nine river to open eight nine Yan to, nine nine plus one nine plowing oxen all over the place! ", which means that in addition to the northwest, northeast, southwest plateau of most areas are still in the middle of winter, many other areas are underway or have completed the transition from winter to spring, in the spring winds and rains, the vast majority of rural areas began to show a busy scene of spring plowing.

But, the rainy season, the northern cold air activity is still very frequent, the weather is very variable. Since this talk of a season of frequent cold air activity, we can not help but mention what people often say "spring cover". This is the ancient people according to the characteristics of the spring climate change and put forward the principle of dressing for health. Early spring Yang Qi gradually born, the climate is getting warmer and warmer, people gradually go to cotton to wear a single. But at this time the northern cold, temperature changes, although the rainy season is not as cold as the cold winter months as cold, but because the human skin coupling has become relatively loose, the resistance to wind and cold evil will be weakened, and thus easy to feel the evil and disease. So this time to pay attention to the "spring cover" is a certain reason. This unpredictable weather, easy to cause mood swings, and even disturbed, affecting people's physical and mental health, high blood pressure, heart disease, asthma patients is even more unfavorable. In order to eliminate these unfavorable factors, in addition to the spring should continue to cover, should take a positive mental conditioning regimen exercise method. Maintaining emotional stability has a very important role in physical and mental health.