Long summer, what does summer mean?

Looking at summer in the long summer means that the summer harvest crops have entered the late growth stage and the harvest quality has been roughly determined, which can be seen.

"Looking at summer in the long summer" is a custom in China traditional culture, which refers to feeling the breath and characteristics of summer on this long summer day. May 5th or 6th of the Gregorian calendar is the solar term of long summer and the last solar term of spring, which means the coming of summer. In this solar term, people can feel the breath and characteristics of summer by observing the changes of nature, so as to express their awe and praise for the vibrant nature.

Climatic characteristics of long summer

1. In the long summer, the temperature in South China is higher than that in the northeast and northwest: in the long summer, the temperature difference between the north and the south is great, and it fluctuates frequently in the same area, and the temperature in the rest of South China is around 20℃; The low-altitude valley felt hot in summer as early as mid-April, and the temperature in long summer was above 24℃. Therefore, it is also a period of frequent crop diseases and insect pests, and it is a period when people are prone to catch a cold. As Heshui Zuo said, "The south is like the summer in the north and the spring in the north. The trees are green and beautiful. When you are sick, the insects disperse the medicine, and the medicine is hot and cold. "

2. Rainy days in Jiangnan: Jiangnan officially entered the rainy season, and rainfall and rainy days increased significantly. Continuous rainy days not only caused wet damage to crops. It will also cause the prevalence of many diseases. The heading and flowering period of wheat is the most susceptible period to scab. If warm but rainy weather is expected in the future, close attention should be paid to spraying chemicals from the early flowering period to the full flowering period.

3. Windy and dry in North China and Northwest China: Before and after the long summer, the temperature in North China and Northwest China rose rapidly, but the precipitation was still not much. In addition, the wind is strong and evaporation is strong in spring. Atmospheric dryness and soil drought often seriously affect the normal growth of crops. Especially, the dry hot wind before and after wheat filling and milk ripening is an important disastrous weather that leads to yield reduction, and timely irrigation is the key measure for drought resistance and disaster prevention.