伊宁市农田防护林不同树种配置林带中主要钻蛀性害虫危害研究

Main Damages of Boring Insects in Forest Belt under Different Tree-Species-Arrangement in Shelterbelt on Farmland in Yili City

以伊宁市农田防护林黄斑星天牛、白杨透翅蛾、青杨天牛和榆木蠹蛾四种钻蛀性害虫为研究对象,研究其对不同树种危害及垂直分布变化。结果表明,不同树种配置林带中各树种的被害率及虫口密度具有明显的差异,从虫口密度及危害率看,青杨天牛危害最重,黄斑星天牛其次,榆木蠹蛾和白杨透翅蛾危害较轻。4种蛀干害虫在各种不同树种上的分布变化规律基本一致,光肩星天牛集中分布在树干4m以下的位置;青杨天牛则以树高2~4m区间内的分布居多;榆木蠹蛾在箭杆杨和合作杨上完全分布在树高2m以下,而在榆树上分布在树干0~4m以内位置;白杨透翅蛾在速生杨上集中分布在树干4m以下。

Taking Anoplophora glabripennis,Paranthrene tabaniformis,Saperda populnea & Holcocerus vicarius as research objects,damage of them on various tree species and the change of their vertical distribution were studied.Result shows that there are remarkable differences in forest belt of tree species arrangement and insect density.From the insect density and damage rate,Saperda populneadamaged severe and followed by A.nobilis;Holcocerus vicarius & Paranthrene tabaniformis are relatively slight.The distribution patterns of these four kinds of borers on different trees are basically consistent.Anoplophora glabripennis densely habitats in the trunk part which is below 4 m.The distribution of Saperda populneamajorlylies in the 2-4 m range of trunks.The distribution of Holcocerus vicariuslocates in trunk part which is below 2m of lombardy poplars while it situates in the trunk range from 0m-4m of siberian elms.The distribution pattern of Paranthrene tabaniformis illustrates that it densely dwells in the trunk part below 4m of fast growing poplar.