黄刺蛾天敌复合体的研究

Study on the Natural Enemy Complex of Oriental Moth

黄刺蛾Cnidocampa flavescens(Walker)分布广,为杂食性叶部害虫,在吉林西部主要危害杨、柳、榆及果树,常将树木叶片食光,是防护林和果树的重要害虫。黄刺蛾天敌种类较多,抑制作用大。于1988～1990年对黄刺蛾天敌复合体进行了定位研究,现将结果报道如下。

The natural enemy complex of oriental moth, Cnidocampa flavescens (Walker), was reported in this paper. There are 9 species of natural enemies in its population in Jilin Province, which forms a natural enemy net of the moth. Each one of the complex has its own biological characteristics and specified nich. They compete with each other in space and food, among them, Chlorocryptus coreanus Szeligeti is the dominant one, whose parasitic rate is 33.96%~60.51%. The second one is Trichcgramma dendrolimi Mats, whose parasitic rate is 10%~37%. The total parasitic rate of the above-mentioned ones is higher in the forest, where the moth had occurred for many years than the newly occurred area.