Describe the weather in Tomb-Sweeping Day.

Qingming is an important agricultural solar term. From the climate point of view, in this festival, except the northeast and northwest regions, the daily average temperature in most parts of China rose to 12℃. Glaciers melt in the north and south of the great river, inside and outside the Great Wall, geese fly north, magnolia and winter jasmine bloom one after another, and then bauhinia, cherry blossom, apricot blossom and pear blossom in turn, competing for beauty, and hardworking farmers are busy sowing. "Before and after Tomb-Sweeping Day, we planted melons and beans" and "Tomb-Sweeping Day is connected with Grain Rain, so don't hesitate to soak seeds and plow fields" ... These agricultural proverbs are evidence that farmers attach great importance to the spirit of Tomb-Sweeping Day.

In the south, "the wind of pear blossoms is clear", which is pink, willow green, pear white and vegetable yellow, and many plants have entered the flowering period. In order to improve the fruit setting rate, necessary artificial pollination must be carried out. The wheat in the south of Huanghuai has also entered the jointing stage, so it is the key to achieve high yield to do a good job in fertilizer and water management and pest control in the later stage of wheat. Clear sowing should be paid close attention to in early and middle rice. At the same time, the new buds of tea trees are growing vigorously, which is an excellent opportunity to pick the top grade. If you are lucky enough to set foot in the tea country, you will also witness the scene of "picking spring" for tea brothers and sisters.