生物安全学报（中英文）2025，Vol.34Issue(3)：230-238,9.DOI:10.3969/j.issn.2095-1787.20240074
紫茎泽兰与本地近缘种林泽兰的竞争效应
Competitive effect between Ageratina adenophora and local relative species Eupatorium lindleyanum
摘要
Abstract
[Aim]This study aimed to evaluate the competitive effect of native-related species Eupatorium lindleyanum on Ageratina adenophora and provide a scientific basis for the alternative control of A.adenophora.[Method]By comparing and determining the biomass,root characteristics,and soil nutrient content changes of A.adenophora and its local relative E.lindleyanum under single and mixed planting,the competitive effect of A.adenophora and E.lindleyanum was analyzed.[Result]The results showed that the plant height,root length,root surface area,root volume,average root diameter,aboveground biomass,underground biomass,and root-shoot ratio of A.adenophora and E.lindleyanum in the mixed mode were significantly lower than those in the single mode(P＜0.05).Compared with single planting,the root length of A.adenophora decreased by 66.0％,and the root length of E.lindleyanum decreased by 42.4％.The average root diameter,volume,and surface area of A.adenophora were reduced by 66.0％,38.7％,97％,and 96.0％,respectively.The average root diameter,volume,and surface area of E.lindleyanum decreased by 42.4％,7.6％,2.0％,and 52.2％,respectively.In addition,the total nitrogen content in the immediate rhizosphere soil of E.lindleyanum under the mixed planting mode was significantly higher than that in the immediate rhizosphere soil of A.adenophora(P＜0.05).The total nitrogen and organic carbon contents in the non-rhizosphere soil were significantly higher than those in the non-rhizosphere soil under the single planting mode of A.adenophora(P＜0.05).The competition effect parameters(RYT＜1,RYA＜1,RYE＜1,CBA＜0)showed that there was a strong competition effect between A.adenophora and E.lindleyanum.The competition between A.adenopho-ra and E.lindleyanum was stronger than within A.adenophora and the competition ability of E.lindleyanum was stronger than that of A.adenophora.[Conclusion]The comprehensive results analysis shows that E.lindleyanum has a strong competitive effect on A.ad-enophora,and the internal mechanism may be related to the higher enrichment of soil carbon and nitrogen resources.关键词
紫茎泽兰/林泽兰/相对产量/根系生长特征Key words
Ageratina adenophora/Eupatorium lindleyanum/fractional diffusion yield/root growth characteristics引用本文复制引用
韩梦阳,陈璐云,于尤昕,王佳敏,徐刚,孙盛楠,杨国庆..紫茎泽兰与本地近缘种林泽兰的竞争效应[J].生物安全学报（中英文）,2025,34(3):230-238,9.基金项目
国家重点研发计划项目(2022YFC2601100) （2022YFC2601100）
