防风的栽培管理技术防风别名关防风、东防风，为伞形科植物防风的干燥根。植物形态多年生草本，高２０～８０厘米。根粗长，表面淡棕色，散生棕色或棕黄色凸出皮孔，茎基密生褐色纤维状的叶柄残基。茎直立，二歧分枝，表面有棱。基生叶丛生，有长柄，基部扩大成鞘状；叶片... Windproof cultivation and management techniques Windbreak alias Guan wind, the East wind, for the umbrella plant dry roots. Perennial herb plant morphology, high 20 to 80 cm. Root coarse, light brown surface, scattered brown or brown protruding leathery holes, stem-based dense brown fibrous petiole residues. Stems erect, dichotomously branched, ribbed surface. Basal leaves clustered, long-handled, base expanded into a sheath; leaves ...