危害三倍体毛白杨的害虫种类、发生与防治研究

在湘南紫色岩试验区,为探讨害虫对三倍体毛白杨造林的影响,于2001~2004年间对危害该树种的害虫种类、发生规律、优势种群等进行了调查研究.结果表明,危害三倍体毛白杨的害虫共有49种,其中蛀干害虫桑天牛Apriona germari(Hope)为当地三倍体毛白杨上的主要害虫,直接影响该树种的生长,是制约三倍体毛白杨在该地区造林的关键因素;分月扇舟蛾C lostera anastom osis(L innaeus)为食叶害虫的优势种.考虑到虫害因素,不宜提倡在这些地方栽种不抗天牛危害的三倍体毛白杨.

Studies on the Species and Occurrence and Control of Insect-Pest in Triploid Populus Tomentosa

In order to explose the effect of insect-pest on the silviculture of Triploid populus tomentosa in the experimental field of violet shale in South-Hunan province,the species and occurrence law and dominant population of the insect-pest damaged this tree was investigated,studied and controlled in 2001~2004.The result indicted that there are 49 species insect-pests damaging this tree,of which boring insect Apriona germari(Hope) is the main pest that affected on its growth directly in this area and is the key factor that restricted its afforestation in this area;of which Clostera anastomosis(Linnaeus) is the dominant species of leaf-eating insect-pest.Taking into account of the insect-pest's damaging,culture of Triploid populus tomentosa in this area is not encouraged.