The feature of the gas spring in the spring equinox

On the equinox day, the sun shines directly into the equator and stays up close to the equator. After that, the location of the direct sunlight gradually moves northwards and begins to grow. The farther the Earth is from the equator, the smaller the solar altitude at midday, the less solar heat is obtained. The general Northern Hemisphere 3,4,5 three months is spring, the southern hemisphere is autumn. During the spring equinox, the large troughs in East Asia weakened significantly, and the activity of the westerly ridges increased significantly. From Mongolia to the northeast, there were often low-pressure activities and cyclones. Low-pressure movements led the cold air southwards, and the northern regions had much wind and sand blowing. When the long wave trough is moved eastward, continuous cold weather and cold weather will occur due to the influence of cold and warm air masses.
During the equinox season, except for the alpine mountain areas in the winter and the areas north of latitude 45° north of the year, the average daily temperature in China has steadily risen above 0°C. The cold has passed and the temperature has risen rapidly, especially in North China and Huanghuai. In the plains, the average daily temperature has risen by more than 10°C with rainy riverside regions and has entered the bright spring. On the vast land, the shore will be green, the grass will grow long, the wheat will be jointed, the rape will be fragrant, and the pink and white will be spring yellow. The South China region is a scene of late spring. According to the law of the climate, the precipitation in the south of the Yangtze River rapidly increased and entered the spring “Peach Blossom” period; precipitation is still rare in the northeast, north, and northwest regions of the “spring rain is as oily” and the threat of spring drought is agricultural production. The main problem. “

Spring equinox
"Spring equinox rises, worth a thousand dollars at a time." In the northern areas with little rain in the spring, we must pay close attention to spring irrigation, pour well-watering water, apply jointing fertilizer, and pay attention to defense against frost damage; the south still needs to continue to do a good job of anti-smuggling work. The early rice seedlings in the Jiangnan early rice and the early rice in the Yangtze and Huaihe River regions have been started. Early spring changes in coldness and warmth are frequent. Attention should be paid to the soaking of cold air to germination, and the cold air must be sown at the end of the day. The masses of people said: “The cold tail warms the head and does not squat.” According to the weather conditions, there are 3-5 sunny days after sowing in order to guarantee the broadcast of the whole seedling. Spring tea has begun to sprout, should be timely application of available fertilizer, pest control, and strive to high yield and quality of tea. “
“February is scared and spring equinox, planting trees to fertilize farmland deep.” The spring equinox is also an excellent time to plant trees and trees. The ancient poetry has the sentence: “Come on the night of a meal with a cow and the tree is the vernal equinox in the Ming Dynasty.” In the hot busy season, we must continue to use our hands to green the mountains and rivers of the motherland and beautify our environment.