The summer is divided into three phases, namely: "The rotten grass in the first phase is firefly; Second, wait for the soil to moisten and cool off the heat; It will be fine when it rains. " Summarize the corresponding phenological phenomena in each period, that is, the "reactions" in the three periods of great summer heat, including animal reactions, plant reactions and natural phenomenon reactions.
When the rotten grass is firefly, fireflies lay eggs on hay and ovulate when exposed to heat, so the ancients thought that fireflies changed from rotten grass; Second, the soil is hot and humid, the soil is infiltrated, the air is hot and humid, and the whole weather is extremely sultry; When it rains heavily, there are often thunderstorms during this period, and the heat and humidity are weakened, and the weather begins to transition to beginning of autumn.
Climatic characteristics of great summer heat;
Summer solar term is the period with the most sunshine and the highest temperature in a year. It is the period with the most abundant rainfall, the most common thunderstorms and the most concentrated days of high temperature above 30℃ in western South China, and it is also the most frequent period of high temperature above 35℃.
The summer heat is also the season with the most thunderstorms. There is a proverb that says, "Without a drop of lightning in the east, the west can't walk", which means that if there is lightning in the east in summer afternoon, it won't rain here. If lightning is in the west, it will come soon, and it is too late to hide. People often call the thunderstorm in summer afternoon "northwest rain" and describe it as "northwest rain, which falls on the driveway."