To sum up, the thesis firstly determined the main antimicrobial constituents of the volatile oil from Solidago canadensis L. and their variation rules subjected to the season.

• 本论文首次明确了加拿大一枝黄花挥发油抗菌活性的主要成份及其季节性变化规律，为其开发利用奠定了坚实基础，具有一定的理论意义和应用价值。