The best time for spring sowing of soybean in one hundred days.

Between the end of April and the beginning of May.

The best sowing date of spring soybean is before the vernal equinox, and the best sowing date of summer soybean is around the long summer.

Soybean originated in China, and has been cultivated all over China, and also widely cultivated all over the world. Soybean is one of the important food crops in China, which has been cultivated for 5000 years. It was called glutinous rice in ancient times. Mainly produced in the northeast of China, the seeds are rich in protein. Soybean is most commonly used for making various bean products, extracting soybean oil, brewing soy sauce and extracting protein. Grinding bean dregs or soybeans into coarse powder is also commonly used in livestock feed.