当归[Angellca sinensis(Oliv)Diels]为我国特产名贵药材,主产于甘肃省岷县、岩昌、武都,云南省丽江、维西等地。生产上在第一年夏季播种育苗,秋季挖苗窖藏,来年定植大田,秋季收获膨大的肉质根即作药刚,未收挖的当归于第三年开花结实。栽培生产过程中,于种植的第二年容易抽苔开花,根部木质化,失去药用价 Angelica [Angellca sinensis (Oliv) Diels] is a famous Chinese medicinal herbs, mainly produced in Minxian, Yanchang, Wudu, Gansu Province, Lijiang, Weixi and other places in Yunnan Province. In the first year of production, seedlings are planted in the summer of the year, dug in the autumn and celled. In the coming year, the fields will be planted with plants and the fleshy roots which have been harvested in autumn will be used as medicines. The unwashed flowers will blossom in the third year. Cultivation and production process, in the second year of planting easy bolting flowering, root lignification, loss of medicinal value