Meteorological standard for entering 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.

Characteristics of the spring:

1, weather

The weather gets warmer and the snow melts. Compared with winter, the nights are getting shorter and the days are getting longer.

2. plants.

Branches sprouted, peach trees blossomed, and vegetables planted in the field sprouted and blossomed.

3. animals.

Animals began to be active, bees flew around in trees and flowers, swallows began to fly back from the south, and geese also flew back from the south to the north.

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.

Extended data:

It began to rain, and it gradually increased. Rain solar term means that it begins to rain and the rainfall gradually increases. In the Yellow River valley in northern China, the weather is cold during the rainy season, but there are snowflakes flying and unpleasant rain sounds. 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 is indeed a climatic spring.

Except for a few years, the frost period is over. 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 agriculture, attention should be paid to moisture conservation and timely irrigation to meet the water supply at the jointing and booting stage of wheat and the critical period of bolting and flowering of rape.

The mountainous area of the northwest plateau is still in the dry season, with low temperature and high wind speed, which is prone to forest fires. In addition, the attack of cold wave will cause strong cooling and snowstorm, which will do great harm to the old, the weak and the young. These should pay special attention to prevention.