在当归苗期选用8种外源激素的不同浓度进行茎叶喷雾处理，研究外源激素对当归的抽薹率、生长量和产量的影响。结果表明，8种外源激素在当归苗期进行喷雾处理，对当归抽薹、地上部分生长(株高、叶片、冠幅)都有一定的影响，可有效提高当归单根鲜重和产量。其中青鲜素1.700 g/L处理效果最佳，抽薹率最低，为6.67%，较空白对照低32.66百分点；地上部分生长量(株高、叶片数和冠幅)略高于空白对照；单根鲜重最大，为120.60 g，较空白对照增加182.63%；折合产量最高，为10 130.04 kg/hm2，较空白对照增产163.78%。综合考虑认为，用青鲜素1.700 g/L在当归苗期进行喷雾处理不但可有效降低当归抽薹率，且对当归地上生长量(株高、叶片和冠幅)无显著影响，并增加当归单根鲜重、提高当归产量，可在生产上推广使用。

The effects of spraying 8 exogenous hormones under different concentration treatment at seedling stage on bolting and yield of Angelica sinensis are studis. The result shows that 8 exogenous hormones could effect on bolting-rate， growth of Angelica sinensis， including height， leaves and canopy， increase yield of Angelica sinensis. The best treatment is MH with dose of 1.700 g/L， which bolting-rate of Angelica sinensis is 6.67%， 32.66 percentage points lower than CK， the growth Angelica sinensis more than CK， the single fresh weight of Angelica sinensis is 120.60 g， 182.63 percentage points more than CK， the yield is 10 130.04 kg/hm2， 163.78 percentage points more than CK. MH with dose of 1.700 g/L could reduce bolting-rate， increasing the single fresh weight and yield of Angelica sinensis， suggesting application in cultivation.

S567.23；S482.8

甘肃省农业科学院农业创新专项“当归早期抽薹的防控技术研究”(2012GAAS15-19)；甘肃省农业科技创新专项“道地中药材病虫草害综合防治技术研究与示范”(2013GAAS03-4)部分内容