摘要
通过采用松毛虫赤眼蜂对齐齐哈尔市园林树木食叶害虫进行防治试验,结果表明:针对刺蛾类食叶害虫,600m2的试验样地每年释放2万头、连续放蜂2年,可累计虫口减退率70%;针对杨毒蛾等杨树食叶害虫,600m2的试验样地每年释放2万头,连续放蜂3年,可累计减少食叶率达75%以上。松毛虫赤眼蜂对园林树木食叶害虫有较好的防治效果。
The control experiments was conducted on the leaf-eating pests of garden trees in Qiqihar by usingTrichogramma dendrolimi.Result shows that 20,000 pests were released annually for 600 m^2 of test insects,which could accumulate a rate of 70% reduction of the population of poplars.For the defozliator,such as Leuoma candida,20,000 bees were released per year spread in the experiment area of 600 m^2 for about 3 years,which can result reduction of the leaf-cutting rate by more than 75%.Dendrolimus trichogrammahave optimal control effecton the garden trees.
出处
《防护林科技》
2017年第11期51-52,共2页
Protection Forest Science and Technology
关键词
松毛虫赤眼蜂
园林
食叶害虫
防治效果
Dendrolimus trichogramma
garden
leaf-feeding pests
control effect
