除虫脲防治马尾松毛虫试验总结

Summary of Experiment of Diflubensuron to Control Dendrolimus punctatus

1991～1992年,应用不同浓度的除虫脲胶悬剂防治各代马尾松毛虫试验结果表明,幼虫中毒后,食量明显减少,不仅使幼虫致死,还会影响残存害虫化蛹、羽化、产卵;每亩用3、5、10、15g20%除虫脲胶悬剂,幼虫、蛹的累计校正死亡率为90.4%～100%。

From 1991 to 1992, experiment of diflubensuron colloidal suspension with dif-ferent concentration to control Dendrolimus punctatus showed that poisoned larva had evidentlyno appetite till dead, meanwhile, the insecticide could influence the pupation, emergence anddeposition of survival insects. The accumulated calibration mortality could reached 90.4%～100%if applied 3,5, 10,15g of 20% diflubensuron colloidal suspension.