The characteristics of the rainwater throttle

Rain throttle general since February 18 or 19, to the end of the March 4 or 5.The sun's direct point also gradually by the southern hemisphere to be near the equator, at this time of the northern hemisphere, sunshine time and strength are on the rise, the rise of temperature quickly, warm moist air from the sea became active, and gradually to the north.At the same time, the cold air in weakening trend is not outdone, engaged in a battle with the warm air frequently, unwilling to exit the dominant position, both to Yu Han also refused to accept.

Rainfall, rainfall is increasing.The meaning of rainwater throttle is rainfall, rainfall is increasing, inThe 24 solar termsThe origin of the Yellow River basin, the rain before the cold weather, but to see snow, bad rain showers;Could be up to 0 ℃ temperatures generally above after the rain, snow and rain more less.But in the south, the weather is always warm, even in the depths of winter rainfall is not rare.Most region of southern China this paragraph of time waiting more than the average temperature above 10 ℃, plum bud, cherry blossoms, it has entered the spring on the climate.In addition to the individual years, frost season is end.Grafting fruit tree, tree planting, is the time.South China after winter dry, year-round spring drought, especially in the west of south China is the "spring rain your such as oil".In addition, when the cold wave invasion can cause strong cooling and snowstorm, great harm to the old, weak, calves.All of these, it is important to pay special attention to the prevention.

The rain not only marks the beginning of rainfall and rainfall increased, but said the rise of temperature.Before the rain, the weather is relatively cold.After the rain, people are obviously feel nor, full of the spring and spring, the breath of all incentive to body and mind.

Most regions of the country the cold when the snow has already taken place,It rainsStart, rainfall is gradually increased, which is beneficial to winter crops root or growth, grasp the winter crops field management, completes the seed selection, spring planting, fertilizer and other preparations for plowing spring sowing.In rain throttle 15 days, from "'" the sixth day we go to the second day of the "jiujiu", "seven JiuHe open to yan, Yang plus pieces of cattle and go", this means that in addition to most of the northwest, northeast, southwest plateau region is still in the cold winter of the Chinese and foreign, many other areas are in or have completed the transition from winter to spring, prodded by the spring rain, the countryside began to display bustling spring planting.

However, the rain season, the north cold air activity is very frequent, the changeable weather.Since this says to the cold air is frequent in season, just stay out of people often say that "spring cover".This is the ancients spring according to the climate change characteristics and puts forward principles of dress of preserve one's health.Climate is warm, early spring sun be the spirit gradually, people gradually to wear cotton sheet.But at the moment the north Yin is cold, not the temperature change is big, although not as cold as severe winter season of rain, but because of human skin cou justified has become relatively loose, resistance to cold the evil will be reduced, thus susceptible to evil and cause disease.So pay attention to "spring cover" at this time there is a reason.The uncertainties of the weather, easy to cause the person's mood swings, and uneasy, affect the person's physical and mental health, especially for patients with high blood pressure, heart disease, asthma.In order to eliminate these unfavorable factors, besides should continue spring cover, should be taken to actively cultivate the spirit of the exercise regimen.Maintain emotional stability plays a very important role to health of body and mind.

After the rain, the spring breeze gifts, pathogenic bacteria, viruses, easy to spread in the wind, so the spring often prone to outbreaks of infectious diseases.Every man should protect yourself, pay attention to exercise, enhance resistance, prevent the happening of the disease.

Rain solar terms, the wet gas rises, and the morning dew, frost, appear.So according to the climate characteristics of this food and nurse should focus on spleen and stomach and former functions of dehumidification.Because the weather is cold again, can be appropriately supplements, such as honey, big jujube, Chinese yam, tremella supplements are suitable for the solar terms.

Of atmospheric circulation in the adjustment stage at this moment, all over the country's climate characteristics, the general trend is by the end of winter cold to make the transition to the warmth of spring.

1. In the middle and lower reaches of the Yellow River region (north China)

At this time of changes in temperature air, has not brought about by the low temperature, snow, but the coming of spring rain.At this point the average temperature in this area have been up to more than 0 ℃, extreme maximum temperature can reach more than 20 ℃ even during the day, have no snow conditions, even if people first named after the first spring rain "rain", is also appropriate.

The rain season, entered the stage of spring wheat at this time the water requirement requested in wheat is higher.At a time when the rain is the least amount of time for the whole year.From the China ground climatic data from 1971 to 2000, we have statistics in February, shijiazhuang, taiyuan, Beijing, respectively, the average rainfall for only 7.4, 5.2, and 4.9 mm, is "the spring rain your such as oil".

2. The northwest and northeast China

Rain during the solar terms, northwest and northeast in China is still not out of the winter.Judging from the average temperature in February, lanzhou, xining, urumqi, shenyang monthly average temperature is 1.0 ℃, 3.9 ℃, respectively 9.7 ℃ and 6.9 ℃, visible these places has not get rid of the cold of winter, the weather is given priority to with cold, precipitation is given priority to with snow.

3. In the south of the Yangtze river, southwest

During the rain, in addition to the southern yunnan is spring scenery garden, southwest, jiangnan most places or a picture of an early spring, the sun warm, raw in the morning and evening, qingqing, everything under the field.

According to the division standard of the seasons: five consecutive days, a daily in daily average temperature 10 ℃ or more - or less 22 ℃, spring began.In general, these places in the true sense of "spring" in late march, which is one month after the "vernal equinox" season to come.But there are also special cases, such as wuhan on February 10, 2004, on February 11, changsha, nanchang, February 11, nanjing on February 13 went into the spring of the real, time for a one month in advance.

According to January and February, according to many years of average rainfall in wuhan was 43.4, 58.7 mm, 66.1, 95.2 mm in changsha, nanchang, 74.0 100.7 mm, 48.0, 86.6 mm in fujian, visible above local rainfall, relative increased significantly in January, February will be suitable for the growth of wheat and rape.

4. In south China

Rain during the solar terms, in southern China is spring, flowers in full bloom.

In south China city for many years, the average temperature in February of the following is: guangzhou 14.5 ℃, 14.1 ℃, 18.7 ℃ hainan haikou, nanningThe city average rainfall in February, respectively is: 69.4 mm, 42.6 mm and 35.0 mm.Although rain than several times that of the middle and lower reaches of the Yellow River region, but here the temperature is high, the evaporation capacity is big, or the lack of water.Especially the southern south China and the local region of hainan island, the rain is still less during this period, often appear spring drought.If affected by the strong cold air, the average temperature is below 10 ℃, the early rice seedlings, seedling is very bad.

If these areas, "spring" is the first movement of the spring "sonata" : the awaken of spring chill of germination,.After the rain, then into the spring of the second movement "variation" : the rise of temperature, suddenly cold suddenly warm."Seven JiuHe during rain to open, wild goose", a picture of the early spring scenery.