泽兰实蝇寄生对紫茎泽兰生长的影响  

Effects of Procecidochares Utilis Parasitism on the Growth of Ageratina Adenophora

作　　者：廖立君 杨洪 胡丽英 易文 陈艳[1] LIAO Lijun;YANG Hong;HU Liying;YI Wen;CHEN Yan(Ecological Security and Protection Key Laboratory of Sichuan Province,Mianyang Teachers'College,Mianyang,Sichuan 621000;Ziyang Middle School of Sichuan Province,Ziyang,Sichuan 641300;Bayin Guoleng Voca-tional and Technical College,Kuerle,Xinjiang 841000)

机构地区：[1]绵阳师范学院生态安全与保护四川省重点实验室,四川绵阳621000 [2]四川省资阳中学,四川资阳641300 [3]巴音郭楞职业技术学院,新疆库尔勒841000

出　　处：《绵阳师范学院学报》2025年第2期79-86,共8页Journal of Mianyang Teachers' College

基　　金：四川省科技计划项目(2017JY0046);绵阳师范学院研究生创新基金项目(CX202404)。

摘　　要：泽兰实蝇(Procecidochares utilis)为紫茎泽兰(Ageratina adenophora)专食性天敌,1984年8月被作为生防昆虫从我国西藏引入云南昆明,建立自然种群后,该物种逐步扩散至四川、贵州等地.已有研究显示泽兰实蝇对紫茎泽兰的防控效果在不同地区、不同条件下有显著差异.为探讨泽兰实蝇寄生对我国西南紫茎泽兰生长的影响,在紫茎泽兰严重入侵的四川和云南省选取了14个种群,比较寄生与未寄生紫茎泽兰植株的主枝高度、基径、分枝数、分枝总长度、主枝生物量、营养元素含量.结果发现,在四川和云南泽兰实蝇寄生不仅没有抑制紫茎泽兰植株的生长,反而导致寄生部位营养物质聚集,显著增加了植株的生物量和分枝数量.目前,泽兰实蝇在我国西南不能作为一种有效的生物防治手段来抑制紫茎泽兰扩散,应探索更有效的方法来防控紫茎泽兰的扩散.Procecidochares utilis,a specialist natural enemy of Ageratina adenophora,was introduced into Kun-ming,Yunnan Province from Tibet region of China as a biocontrol agent in 1984.After establishing its natural popu-lation there,this species gradually spread to Sichuan,Guizhou et al.It was demonstrated the control effect of P.utilis on A.adenophora could be significantly different among different regions and environmental conditions.To investi-gate the effects of parasitism of P.utilis on the growth of A.adenophora,14 populations were selected in Sichuan and Yunnan provinces,where A.adenophora invasion was severe.The parasitized A.adenophora plants were compared to healthy ones from the main branch height,basal diameter,branch number,branch length,main branch biomass,and nutrient content.The results indicated that A.adenophora was not inhabited in growth by the parasitism of P.utilis,but increased in biomass and branch numbers due to the accumulation of nutrients in the parasitized parts.In conclusion,P.utilis cannot be used as an effective biocontrol agent to suppress the spread of A.adenophora in south-western China so far.More effective methods are needed to control the expansion of A.adenophora.

关 键 词：泽兰实蝇 紫茎泽兰 生物防治 生长性状 

分 类 号：S451[农业科学—植物保护]