Competition between three native plants and invasive Ageratina adenophora

To select the potential native plants for replacement control of the invasive Ageratina adenorphora, competition relationships between three native plants（Choerospondias axillaris, Desmodium heterocarponand, and Setaria viridis） and A. adenophora were measured by the competitive parameter relative yield（RY） and competitive aggressivity coefficient（A） in a common garden experiment. In addition, effects of the activated carbon（AC） and fungicide（FC） on the competition of the native plants with A. adenophora were also studied, aiming to explore a method of improving the replacement control and ecological restoration effects. The results showed that under the condition without AC or FC,when A. adenophora was grown with C. axillaris, the total biomass of A. adenophora mixculture was higher significantly than that in monoculture（P