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   Pistia stratiotes (水生植物)  English  français   
生态 分布 管理 影响 参考数据 联系


         管理信息

    预防措施:大萍(Pistia stratiotes)风险评估,由澳大利亚太平洋岛屿生态系统风险计划执行(PIER)利用澳大利亚的风险评估系统(费罗翁1995)。其结果是18分,建议如下:应禁止进口此植物(澳大利亚)或此植物可能是有害的(太平洋)。

    物理方法:最常见的物理控制方法是从池塘表面耙或网围(使用大型渔网)。在美国,是经由机械割除机耙除,然后把它从水中移到岸边,再用切碎机切碎(Ramey, 2001)。

    化学方法:化学控制方法,已成功处理大萍(Pistia stratiotes)包括茵多杀除草剂,它可以迅速作用并杀死所有植物细胞。

    生物方法:根据Rivers (2002),莴叶象鼻虫(Neohydronomus affinis) 是南美和澳大利亚原生种,1980年代初首次被引入,用来防治大萍(Pistia stratiotes)。其它释放象鼻虫的研究目前正在进行。这些象鼻虫有一个很短的生命周期(大约 30天),使它能快速建立种群。成熟的象鼻虫吃叶片,而幼虫则攻击叶片内面。其它有效的方法控制方法是引进的水浮莲叶蛾(Spodoptera pectinicornis)。该蛾原产于泰国,被引入到佛罗里达州作为生物控制剂用来控制水浮莲。此蛾有一个非常短的生命周期(大约 35天),幼虫期17~20天。蛾成虫不取食水生菜,但是,蛾幼虫能对大萍(Pistia stratiotes)造成重大损害。幼虫是相当大,这意味着更少的幼虫可以提供一个更大的作用。 English  français   



         地点特有的管理信息
    Australia
    A biological control programme for Pistia stratiodes was undertaken simultaneously with programmes for the other aquatic invaders Eichhornia crassipes, Salvinia molesta and Hydrilla verticillata, to avoid the increase of other invasive species as one was controlled.
    New Zealand
    Plants were removed by hand from the two sites where Pistia was deliberately planted.


         管理资源 /链接

    2. Gee II, David E., pers. comm. 2006. Wildlife Biologist, Guam Division of Aquatic & Wildlife Resources and Guam team member of the Pacific Invasives Learning Network (PILN).
    3. Hilhorst, M. Water lettuce .
            摘要: A report on how P. stratiotes was eradicated from the two sites where it was deliberatly planted.
    Available at www.biodiv.org [Accessed 24 September 2003]
    5. National Pest Plant Accord, 2001. Biosecurity New Zealand.
            摘要: The National Pest Plant Accord is a cooperative agreement between regional councils and government departments with biosecurity responsibilities. Under the accord, regional councils will undertake surveillance to prevent the commercial sale and/or distribution of an agreed list of pest plants.
    Available from: http://www.biosecurity.govt.nz/pests-diseases/plants/accord.htm [Accessed 11 August 2005]
    9. Swaziland's Alien Plants Database., Undated. Pistia stratiotes
            摘要: A database of Swaziland's alien plant species.

         结果页: 1  


ISSG Landcare Research NBII IUCN University of Auckland