以当归品种岷归1号指示品种，采用1 700、2 210、2 580 m三个海拔梯度进行当归秋季直播，同时以海拔2 210 m的移栽当归为对照， 研究了不同海拔对秋直播当归生长动态及产量、品质的影响。结果表明，秋直播当归从9月份开始芦头茎粗、单根干重表现为随海拔升高而减小，且在整个生长期间都小于对照移栽当归。1 700、2 210、2 580 m海拔下的秋直播当归抽薹率均为0，1700 m海拔下秋直播当归产量比对照移栽当归增产4.99%， 2 210、2 580 m海拔下秋直播当归分别比对照移栽当归减产2.69%、29.75%。1 700 m海拔下秋直播当归以二、三、四等品为主，占总量的86.67%，2 210、2 580 m海拔下秋直播当归以三、四等品为主，分别占总量的93.33%、100.00%。秋直播当归醇溶性浸出物、挥发油和阿魏酸含量随海拔的升高而升高，2 210、2 580 m海拔下秋直播当归的阿魏酸含量分别比对照移栽当归显著提高13.0%、5.8%。当归秋直播技术可在海拔1 700～2 210 m区域推广，以海拔1 700 m的秋直播当归根长、芦头茎粗、单根干重、产量、商品等级等指标表现最佳。

In order to study the impact of different altitudes on the dynamic growth, output and quality of direct-seeding Angelica sinensis in Autumn. Three altitude gradients, 1 700 m, 2 210 m and 2 580 m were adopted by using the indicator cultivar Mingui 1 for the direct-seeding of Angelica sinensis in autumn, and transplanted Angelica sinensis at the altitude of 2 210 m was taken as the control group. The results showed that since September， the stem diameter and dry weight of a single root of the direct-seeding Angelica sinensis in autumn decreased with the rise of altitude, and it was smaller than transplanted Angelica sinensis throughout the whole growth period. At 1 700 m, 2210 m and 2 580 m， the moss pumping rate of autumn direct sowing angelica was 0， and the yield of direct sowing Angelica sinensis at 1 700 m in autumn was 4.99% higher than that of the control， and the yield of direct sowing Angelica sinensis at 2 210 m and 2 580 m in autumn was 2.69% and 29.75% lower than that of transplanting Angelica sinensis， respectively. Second, third and fourth grade of products at a low altitude were dominant， accounting for 86.67% of total products. Third and fourth grade of products at a middle and high altitude were dominant, accounting for 93.33% and 100% of total products， respectively. Ethanol-soluble extractives， volatile oil and content of ferulic acid increased with the increased with the rise of altitude. The content of ferulic acid at middle and high altitude increased by 13.0% and 5.8% respectively compared with transplanted Angelica sinensis. The direct-seeding technology of Angelica sinensis in autumn can be promoted in regions ranging between 1 700 m and 2 210 m altitude. direct-seeding Angelica sinensis in autumn at the altitude of 1 700 m has the best performance， including the root length, stem diameter， dry weight of single root， yield and product grade， etc.

S567.23

国家重点研发计划项目(2018YFD0201100)；国家自然科学基金资助项目(31201161)。