芦毒蛾对荻的为害损失及防治指标研究  

STUDIES ON DAMAGE AND CONTROL ACTION THRESHOLD OF Laelia coenosa(H bner)ON SILVER GRASS Miscanthus sacchariflorus Benth

作　　者：余映波[1] 张立明 王博强 陈琪 王进[1] 

机构地区：[1]湖南农业大学植物保护系,湖南沅江市芦苇科学研究所

出　　处：《湖南农学院学报》1995年第1期52-55,共4页

基　　金：益阳地区立项的协作研究课题

摘　　要：芦毒蛾是危害荻的主要害虫之一．１９９１和１９９３年在沅江市万子湖苇场进行罩笼接虫试验的结果表明，不同虫口密度对荻生长及产量有显著影响．根据产量损失率的测定，确定了芦毒蛾的经济受害允许损失水平为５．７５％；由此得出洞庭湖区第一代芦毒蛾的防治指标为：每株荻４．３头芦毒蛾幼虫．Laelia coenosa(H bner)is one of chief insect pest silver grass Miscanthussacchariflorus.Experiments were conducted in 1991 and 1993 in the reed field of WanziLake of yuanjiang county respectively.The enveloping test indicates that the effects on differ-ent larvae population are significant for growth and yield in silver grass Miscanthus sacchariflorus.The economic injury level is 5.75% on the bases of determination of yield lossrates.According to the experimental result,the control action threshold of first generationis developed as 4.3 larvae/plant in silver grass Miscanthus sacchariflorus of Dongting Lakeregion.

关 键 词：禾本科 毒蛾属 防治 荻 芦毒蛾 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治] S435.64[农业科学—植物保护]