Is it raining in Tomb-Sweeping Day?

The proverb "It rained intermittently for three months in Tomb-Sweeping Day" literally explains that if it rains in Tomb-Sweeping Day that day, there will be more rainy days in the next three months. From the perspective of agricultural planting, the last three months in Tomb-Sweeping Day, taking wheat as an example, include jointing, heading, grouting, harvesting, and the sowing date of the next crop.

During this period, proper rainfall is beneficial to the growth of crops, but if there are more rainy days, it will have the opposite effect. For example, it affects the booting stage of wheat, resulting in less heading of wheat, or the phenomenon of no grain in the ear, which in turn leads to wheat yield reduction.

At the same time, the increase of rainy weather also increases the probability of pests and diseases, which will also affect the normal growth of crops. Therefore, just from the meaning expressed by this proverb, it is a bad implication that it rains in Tomb-Sweeping Day.

The proverb "Qingming is not afraid of sunny days and Grain Rain is not afraid of rain" means Qingming is not afraid of sunny days and Grain Rain solar terms are not afraid of rainy days. By contrast, it shows that the sunny days in Tomb-Sweeping Day are good. Or from the perspective of agricultural cultivation, take wheat as an example. During the period of Tomb-Sweeping Day, wheat entered the jointing stage, and the topdressing and watering work was finished in the greening period.

Qingming period is the peak period of wheat spraying and three defenses, and pest control is the key. During this period, sunny days are conducive to pesticide application and improve the ability of pest control. If it rains, it will delay the application of medicine. At the same time, rainy days will lead to high humidity in the field and increase the occurrence of pests and diseases. So sunny days in Tomb-Sweeping Day are good in this respect.