Scientia Agricultura Sinica ›› 2011, Vol. 44 ›› Issue (11): 2269-2275 .doi: 10.3864/j.issn.0578-1752.2011.11.008

• PLANT PROTECTION • Previous Articles     Next Articles

Feedback of Fungicide on Invasive Plant Ageratina adenophroa and Companion Plants

LI Hui-na,LIU Wan-xue, WAN Fang-hao

  

  1. 中国农业科学院植物保护研究所农业病虫害生物学国家重点实验室
  • Received:2010-09-07 Revised:2011-01-31 Online:2011-06-01 Published:2011-06-01
  • Contact: Wan Fanghso

Abstract:

【目的】通过盆栽控制试验,验证外来植物紫茎泽兰改变的土壤真菌在其入侵过程中的作用,揭示紫茎泽兰入侵的土壤微生物学机制。【方法】通过施加杀真菌剂控制土壤真菌,研究土壤真菌对紫茎泽兰和2种伴生植物的生长,以及对紫茎泽兰与伴生植物竞争互作的影响。【结果】未施加杀真菌剂处理,紫茎泽兰生物量在入侵过的土壤中是当地植物土壤中的1.85倍,而伴生植物在紫茎泽兰入侵过的土壤中生长明显受到了抑制。在入侵土壤中紫茎泽兰与燕麦草共生时,紫茎泽兰的生物量是其单独生长时的1.29倍。施加杀真菌剂的处理,紫茎泽兰和伴生植物单独生长的生物量都比未施加杀真菌剂处理有所增加;紫茎泽兰与伴生植物共生时,杀真菌剂处理明显降低了紫茎泽兰的竞争力。【结论】紫茎泽兰入侵改变的土壤真菌,促进了自身的生长,并增强了紫茎泽兰与伴生植物的竞争力。

Key words: invasive plant, Ageratina adenophora, fungicide, soil fungi, feedback

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