Roots fusiform or clump-shaped, generally slightly curved. Length 5-15cm, diameter 4-10cm. The surface is reddish-brown or reddish-brown, uneven, with irregular longitudinal grooves and dense wrinkles, and has transversely long lenticels and fine root scars.
Live broadcast is the main method, and seedlings can also be transplanted. Sow the seeds from early March to early April, with a row spacing of 30-35cm.
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