When does it rain in spring?

The arrival of the rain solar term means the arrival of the precipitation season, which is the season of crop broadcasting. Then let's learn about spring rain and solar terms with the old calendar!

Rain, the second of the twenty-four solar terms, is located on the fifteenth day of the first month of each year (February 18-20 in Gregorian calendar), which belongs to the spring solar term, and the sun reaches 330. Rain, like Grain Rain, light snow and heavy snow, is a solar term reflecting precipitation. On this day, the usually married daughter will go home to visit her parents and send her mother a red silk and a pot of stew.

Overview of solar terms

Rain means that it begins to rain, and the rainfall gradually increases. Rain has two meanings, one is that the weather gets warmer and the precipitation increases gradually, and the other is that there is less snow and more rain. "Twenty-four solar terms" said: "In the first month, water is in the sky. Spring belongs to wood, but there must be water for those who grow wood, so there is rain in beginning of spring. If the east wind melts, it will disperse into rain. "

Rainwater solar term refers to the entry into spring with meteorological significance. After the "rain", the temperature in most parts of China rose to above 0℃, the daily average temperature in Huanghuai Plain reached about 3℃, the average temperature in Jiangnan was about 5℃, the temperature in South China was above 10℃, and the average temperature in North China was still below 0℃. Before and after rainfall, rape and winter wheat generally turn green and grow, which requires high water content. "Spring rain is as expensive as oil", so proper precipitation is particularly important for crop growth. At this time, the precipitation in North China, Northwest China and Huanghuai areas is generally less, which often cannot meet the needs of agricultural production. If there is little rain in early spring, the best economic benefit can be obtained by timely spring irrigation before and after the rain.

In the area south of Huaihe River, it is mainly to strengthen intertillage and hoeing, and at the same time, do a good job in clearing ditches and draining water in the field to prevent excessive spring rain from causing wet damage and rotten roots. As the saying goes, "Water the flowers with wheat, water the flowers with vegetables", and the coated rape should be topdressing with moss fertilizer in time to compete for more pods. South China's double-cropping early rice seedling cultivation has begun, so we should pay attention to "cold tail and warm head", and strive to sow all the seedlings at once.