What is the temperature standard for entering spring?

As far as solar terms are concerned, spring in China begins in the beginning of spring (February 2-5) and ends in the long summer (May 5-7). The following is the spring temperature standard compiled by Bian Xiao. Like to collect and share!

What is the temperature standard in spring?

The meteorological criterion for entering spring is that the daily average temperature exceeds 10℃ for five consecutive days.

From the climate point of view, beginning of spring is just a prelude to spring. According to climate standards, Tomb-Sweeping Day in the northeast and northwest enters spring, the vernal equinox and solar terms in North China enter spring, the middle and lower reaches of the Yangtze River enter spring before and after the shock, and the rain in the southwest enters spring. Only in the south of China, the beginning of spring solar term can be used as the beginning of spring.

Meteorology is a subject that takes the atmosphere as the research object, explains the gas characteristics of large-scale agricultural meteorology from both qualitative and quantitative aspects, and focuses on the weather situation and changing law of the atmosphere and weather forecast. Meteorology is a branch of atmospheric science.

Weather characteristics in spring

(1) The temperature changes greatly.

People generally regard spring as the beginning of a year, and everything is new and full of vitality, but spring is also the period when the weather changes the most, and the temperature changes suddenly from warm to cold. The temperature difference in a day is the largest in spring. Taking Beijing as an example, the difference between the highest temperature and the lowest temperature reached 26.8℃ on May 3rd, 1966. Therefore, in spring, we should listen to the weather forecast in time, pay attention to the weather changes and increase clothes in time.

The air is dry and windy

Spring is in the adjustment period of atmospheric circulation, and cold and warm air activities are frequent. In addition to the great temperature change, dry air and windy weather are another feature.

Spring is the transitional season between winter and summer, and the cold and warm air are equally strong, both of which are very active, so windy weather often occurs, especially in northern China, which is characterized by alternating north-south winds and strong winds. Generally speaking, the phenomenon of frequent north-south winds can be improved after May. The arrival of a windy weather brought cold air, the temperature dropped, and at the same time reduced the air humidity. It is easy to cause colds, rhinitis, arthritis, psychosis, skin diseases and other diseases.

(3) Dust weather in the north

In spring, with the temperature rising, if there is little precipitation, the ground is dry and the wind comes, it is easy to have dusty weather. Meteorology, sandstorm weather is divided into floating dust, sand blowing and sandstorm. In northern China, March and April are the frequent periods of dusty weather.

The result of sandstorm weather is that the concentration of suspended particles in the atmosphere, especially inhalable particles harmful to human body, increases sharply, which leads to the decline of air quality. These suspended particles contain a variety of allergens, which are easy to induce allergic reactions in people with allergic constitution, thus causing allergic diseases such as allergic dermatitis, allergic rhinitis, asthma and urticaria. Allergies must stay away from these allergens and pay attention to personal preventive measures when going out.

(4) rainy weather in the south

In early spring or late autumn in China, it rained continuously for several days or even months, and the weather was cold and there was almost no sunshine. Also known as low temperature and continuous rain.

It is often rainy and rainy in southern spring, with low temperature and warm temperature appearing alternately. Humidity in rainy season is high, which is easy to cause rheumatoid arthritis. In addition, it also has a great influence on people's psychological diseases. Therefore, special attention should be paid to adapting to nature and climate change in spring.

Spring healthy food

1, bamboo shoots

When it comes to eating spring, you have to mention bamboo shoots. Spring bamboo shoots are crisp and delicious, and they are fragrant and sweet when chewed. They are known as "the first vegetarian food" and have been loved by people since ancient times. Scholars and gourmets are amazed at it, and there is a saying that "early adopters are like mushrooms after rain". If carnivores are contemptuous, eating bamboo shoots is just the opposite. The taste of bamboo shoots is so elegant and meaningful. Chinese medicine believes that spring bamboo shoots have the effects of "benefiting nine orifices, dredging blood vessels, resolving phlegm and promoting fluid production, and promoting digestion and abdominal distension".

2. Toona sinensis

There is also a folk saying that "eat Toona sinensis buds on March 8". Every year in the third month of the lunar calendar, it is a good season for the listing of Toona sinensis buds. Toona sinensis can not only make various special dishes, but also prevent and treat diseases. It is a natural green health food with the same origin of medicine and food. According to modern nutritional analysis, the vitamin content of Toona sinensis bud is 1 times higher than that of tomato. Toona sinensis also contains protein, vitamin E, calcium, phosphorus, iron and other elements, which is the highest in vegetables. Toona sinensis buds can be made into various dishes, and its new branches and leaves taste the best. It tastes delicious and mellow, and also has the effects of stimulating appetite, nourishing skin and strengthening body.

3. Cherry

Known as "the first branch of spring fruit", it is cultivated all over China. Cherry fruit is plump, delicious, juicy, bright in color and rich in nutrition, and its iron content is particularly prominent, which is more than 20 times that of citrus, pear and apple, ranking first among fruits. Cherry is warm, sweet and slightly sour, and has the effects of nourishing middle jiao, benefiting face, strengthening spleen and appetizing. Eating cherries in spring can make people sweat, benefit qi, dispel wind and penetrate rash.

Step 4: strawberries

Among the anti-cancer fruits, the role of strawberries ranks first. Fresh strawberries contain a wonderful tannic acid substance, which can produce anti-toxic effect in the body and prevent the formation of cancer cells. In addition, there is an amine in strawberry, which can also play a good role in preventing leukemia, aplastic anemia and other blood diseases.