When the solar term comes and the rainfall is sufficient and timely, cereal crops can thrive () () A. Equinox B. Grain Rain C. Long summer D.

When the solar term arrives in Grain Rain, only when the rainfall is sufficient and timely can the cereal crops grow sturdily.

Grain Rain is the sixth solar term among the 24 solar terms and the last solar term in spring. Combat refers to Chen; The meridian of the sun is 30; Celebrate every April 19-2 1 in Gregorian calendar. Grain Rain was taken from the meaning of "Rain gives birth to a hundred valleys", and the precipitation increased obviously at this time. Seedlings and new crops in the field need the moisture of rain most. Only when the rainfall is sufficient and timely can cereal crops thrive.

Grain Rain, like rain, Xiao Man, light snow and heavy snow, is a solar term reflecting precipitation and ancient farming culture. In Grain Rain season, in the south of our country, it often begins to appear obvious rainy weather, especially in the south of our country. Once cold air meets warm and humid air, it often forms a long rainy weather.

Qinhuai River is a transitional area between the spring rain area in the south and the spring drought area in the north. From the Qinling-Huaihe River to the north, the spring rain decreased sharply. In the northern region, Grain Rain is a symbol of the "final frost".

Continuous spring rain is the most important feature of Grain Rain. The name "Grain Rain" comes from the old saying "Rain gives birth to hundreds of valleys", which reflects the agricultural climate significance of solar terms. Folk festivals in Grain Rain include picking Grain Rain tea, visiting Grain Rain, offering sacrifices to the sea, eating spring and enjoying flowers.

Meteorological changes in Grain Rain;

Continuous spring rain is the most important feature of solar terms in Grain Rain. After the solar term in Grain Rain, the rainfall increases and the humidity in the air gradually increases, which is beneficial to the growth of crops. After entering the Grain Rain solar term, the precipitation in the middle and lower reaches of the Yangtze River and the south of the Yangtze River increased obviously, especially in South China. Once cold air meets warm and humid air, it will often form rainy weather for a long time.

The Huaihe River Basin in Qinling Mountains is basically the dividing line between the spring rain in the south of the Yangtze River and the spring drought in the north. From the Qinling-Huaihe River to the north, the spring rain decreased sharply. In the north, Grain Rain is a symbol of the "final frost". There are few cases of large-scale invasion of cold air into the south, but the cold air activities affecting the north have not stopped, and early thunder will appear in many places.