Significance of planting melons and beans before and after Tomb-Sweeping Day

It is an agricultural proverb to plant melons and beans before and after Tomb-Sweeping Day. Tomb-Sweeping Day is closely related to agricultural production. When Tomb-Sweeping Day arrives, the temperature rises and the rainfall increases, which is a good season for spring ploughing and planting. Therefore, there are agricultural proverbs such as "planting melons and beans before and after Qingming Festival" and "planting trees is not as good as Tomb-Sweeping Day".

April 5th is the Tomb-Sweeping Day in the twenty-four solar terms. When the sun moves to the longitude of the Yellow River 15 degrees, Tomb-Sweeping Day Qi begins. At this time, the temperature is getting warmer, plants are sprouting, the weather is sunny and clear, everything is thriving, and Qingming is clean.

With the arrival of Tomb-Sweeping Day gas, the atmospheric circulation in East Asia turns from winter to spring, the westerly ridge moves frequently, and the low-level high and low pressure appear alternately. The temperature in the Jianghuai area changes greatly, and unstable precipitation such as thunderstorms gradually increases.

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During the Qingming period, there was still little precipitation. Water is often in short supply for crops and spring sowing. At this time, rain is very precious. These areas should do a good job in spring irrigation while storing water and preserving soil moisture to prevent the threat of spring drought.

Tomb-Sweeping Day is often regarded as a weather vane, for example, there is a saying that there is a clear snow break in the south of the Yangtze River and a frost break in Grain Rain, and there is a saying that there is a clear snow break in North China and a frost break in Grain Rain.

Tomb-Sweeping Day is not only an extremely important agricultural season, but also the only solar term among the 24 solar terms that has evolved into a folk festival, also known as "Tomb-Sweeping Day". Since ancient times, there have been rich commemorative and entertainment activities such as sweeping graves, inserting willows, hiking and flying kites, which have made Qingming full of attractive colors.