Comparative Study on the Allelopathy of Invasive Species Solidago canadensis L. and Native Species Solidago decurrens Lour. Comparative Study on Morphological Characteristics of “Huang-ying-hua”,Invasive Alien Weed Solidago canadensis L. and Its Relatives with the Same Genus Invasive structural foundation of exotic plant Canada goldenrod Allelopathic Effects of Aquatic Extracts from Solidago canadensis‘‘‘‘s Roots and Rhizospheric Soil on the Seed Germination and Early Seedling Growth of Chinese Cabbage and Radish Invasion mechanisms of Solidago canadensis L.: a review