论文部分内容阅读
杨锤角叶蜂在哈尔滨地区非常普遍,危害杨柳类树种的叶子,危害虽然不十分严重,但引起被害树木生理衰弱,促使次期性树干害虫寄居,特别是木蠹蛾和杨干白尾象鼻虫。 在哈尔滨我校林场,杨柳类树种被次期性树干害虫为害十分严重,促使这些树木生理衰弱原因当然很多,但食叶害虫——杨锤角叶蜂的危害是主要原之因一,同时,此虫的生物学比较特殊,而且国内外很少研究,因此我们觉得有必要进行观察,所得初步结果供大家参考。
Hyphantria occidentalis is very common in Harbin, endangering the leaves of willow species, the harm is not very serious, but the physiological damage caused by the damaged trees, prompting the second residence of tree pests, in particular, . In Harbin, our school forest field, willow species are very serious damage caused by secondary tree pests, of course, the physiological decline caused by these trees of course a lot, but the leaf pest - the hammerhead beetle harm is one of the main reasons, the same time, Insect biology is rather special, and few studies at home and abroad, so we think it is necessary to observe the preliminary results for your reference.