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目的观察0.5%氟虫腈杀红火蚁饵剂对城市绿地的红火蚁的现场防治效果。方法采用单蚁巢表面施药方法施药。每巢按10 g~l5 g的剂量施药,施药后每次观察时段对仍有活蚁的活动蚁巢进行补充施药。观察7 d、15 d、30d、45 d、60 d和75 d的杀灭效果。结果 0.5%氟虫腈杀红火蚁饵剂对现场的红火蚁杀灭效果良好,试验区施药7 d后红火蚁活动蚁巢明显减退,施药15 d、30 d的活动蚁巢校正减退率分别为64.8%和95.1%,施药60 d后活动蚁巢减退率均达到100.0%,工蚁校正减退率为100.0%,达到控制效果;75 d观察未发现新的活动蚁巢。结论 0.5%氟虫腈杀红火蚁饵剂单独使用能快速控制城市绿地的红火蚁。
Objective To observe the control effect of 0.5% fipronil on red fire ant live bait on urban green land. Methods Single ant nests surface application method of application. Each nest at a dose of 10 g ~ l5 g application, after each application of the observation period of activity is still alive ant nests for supplementary application. The killing effects of 7 d, 15 d, 30 d, 45 d, 60 d and 75 d were observed. Results 0.5% fipronil to kill red ant ant bait had a good effect on the killing of red imported fire ant in the field. After 7 days of application, Respectively, which were 64.8% and 95.1% respectively. After 60 days of application, the reduction rates of active nest were all 100.0% and the reduction rate of worker ants was 100.0%, which reached the control effect. No new activity nest was found on the 75th day. Conclusion 0.5% Fipronil to kill red ants bait alone can quickly control the urban green space of red imported fire ant.