What are the three stages of fright?

"When peaches begin to blossom; Second, wait for the sound of Cang Geng (Huang Li); Three waiting eagles turned into pigeons. " The description is mid-spring, peach blossom red, pear blossom white, orioles singing and swallows coming. According to the general climate law, the weather in all parts of the country began to get warmer, with more rain, and most areas entered spring ploughing. When all kinds of insects dormant and hibernating in the soil are awakened, eggs in winter will also begin to ovulate. It can be seen that fright is a solar term reflecting natural phenology.

Climatic characteristics of fear season.

"Spring thunder, everything grows". It was a beautiful sunny day in September. The temperature rose and the rain increased. In addition to the winter scenes in which the northeast and northwest regions are still covered with silver, the average temperature in most parts of the country has risen above 0℃, the daily average temperature in North China is 3-6℃, the temperature in the south of the Yangtze River is above 8℃, and the southwest and south China have reached 10- 15℃, which is already a harmonious spring.

"Spring thunder surprises thousands of insects". Warm climate conditions are conducive to the occurrence and spread of many diseases and insect pests, and weeds in the fields have sprouted. Therefore, it is necessary to do a good job in pest control and intertillage weeding in time. "Peach blossoms come, swine fever comes", and we should also pay attention to the epidemic prevention of poultry and livestock. At this time, the temperature rose rapidly, and spring thunder gradually appeared in most areas of the Yangtze River Basin.

The shocking significance of solar terms

There are two solar terms in March, namely "fright" and "vernal equinox", which is of great significance in busy farming. Since ancient times, the working people in our country have attached great importance to the solar term of fright and regarded it as the day when spring ploughing began. There is a cloud in the Tang poetry: "A light rain brings new flowers, and a thunder starts. Tian Jia was idle for a few days, and farming began. " Winter wheat in North China began to turn green, and the soil was still frozen and thawed alternately. Raking the ground in time is an important measure to reduce water evaporation. "Shocking without harrowing is like steaming steamed bread", which is a valuable experience for local people to fight drought and conserve moisture.