当归一般第一年夏季播种育苗,来年定植,秋季收获肉质根入药,未收获的于第三年开花结实。但在栽培中,往往第二年就抽薹开花,根部木质化,失去药用价值。提早抽薹开花严重时竟达50%。控制当归早抽薹,关键在于育苗。选好种子当归育苗以选较晚熟的三年生品种的种子为好。要求是大栽子结的呈粉白色的较嫩的种子。且要培育大栽子,第二年选择大栽子单独栽植,淘汰抽薹的,留不抽薹的作种,逐年坚持下去。 Angelica generally planted seedlings in the summer of the first year in general, planting in the coming year, harvesting succulent roots in autumn, and unharvested flowering in the third year. But in cultivation, it is often the second year of bolting flowering, root lignification, loss of medicinal value. Early bolting flowering was as high as 50%. Control of early bolting Angelica, the key is nursery. Selection of seeds Angelica nursery to select the more mature triennial varieties of seeds as well. The request is a big white plant knot of tender white seed. And to cultivate big plant, the second year to choose a large plant separately planted, out of bolting, leaving not bolting for the species, persevered year after year.