4种杀虫剂毒饵对黑翅土白蚁的防治效果

目的了解4种杀虫剂配制的毒饵对黑翅土白蚁的防治效果,为控制黑翅土白蚁的危害提供新的手段。方法将阿维菌素、氟虫腈、灭蚁灵和吡虫啉4种药剂分别配制成1%和0.2%的毒饵,每袋毒饵包3g,采用正交试验筛选出的最佳毒饵应用技术,进行林间诱杀药效试验。结果用药后4周1%氟虫腈与0.2%阿维菌素毒饵的防治效果分别为99.33%和91.32%,显著高于其他各处理组。用药4周后,在1%氟虫腈和0.2%阿维菌素毒饵试验区出现白蚁巢穴死亡指示物——鹿角菌,进一步证实了1%氟虫腈和0.2%阿维菌素毒饵的防治效果。结论 1%氟虫腈毒饵和0.2%阿维菌素毒饵可用于林地黑翅土白蚁的防治。

Control effects of four baits against Odontotermes formosanus

Objective To determine the effects of baits formulated with four insecticides for the control of Odonto- termes formosanus so as to provide new products for reducing the damage of O. formosanus. Methods Avermectin, fipronil, mirex and imidacloprid were formulated into 1% bait and 0.2% bait respectively. One bag of each bait was 3 grams. The field test of all baits was done according to the best bait application technology optimized with orthogonal experiment. Results The results indicated that the control effect of termites were 99.33% for 1% fipronil bait and 91.32% for 0.2% avermectin bait after 4 weeks of bait application. Meanwhile, the Xylaria nigripes Klotz,which was one of pointers of dead O.formosanus colony, was observed in the bait application area. This confirmed the con- trol effect of these two baits against O.formosanus. Conclusion The 1% fipronil bait and 0.2% avermectin bait could be used for the control of O. formosanus in field.