Seeds are harvested from July to September when the seeds are fully mature. After harvesting, the seeds are dried in a dry place indoors in time. After the peel cracks, the seeds are taken out and stored after drying to prevent mildew and oil production. In the first ten days of March, the stored seeds were soaked in 70℃ water 12 hours, then the waxy layer on the surface of the seeds was rubbed off with alkaline water, and then washed with clean water, and then the wet sand was heated to 20℃ to accelerate germination and storage. After mid-March, drill sowing began after the seeds exposed radicle. Generally, the plant spacing is 3-5cm×30-40cm, and it can also be spread in the border. According to the soil moisture, it is necessary to sow with sufficient soil moisture and cover the soil with a thickness of 2-3cm. The seeding rate is about 10kg/ mu, the germination rate is about 70%, and the seedling yield is above 50,000 plants/mu.