5种药剂对红火蚁的田间药效评价

以活动蚁巢减退率和工蚁减退率为指标，评价红火蚁克星（Ⅳ型）、灭蚁威、火蚁净、蚁净安和灭蚁蝗等5种药剂对红火蚁的防治效果。结果表明，不同药剂间防治效果存在差异，其中药后21 d，红火蚁克星（Ⅳ型）和灭蚁威饵剂均具有很好的防治效果，对蚁巢防效和活动工蚁的防治效果均达90.0%以上。建议采用上述两种药剂进行轮换使用，从而延缓红火蚁产生抗药性。

Field Efficacy Evaluation of Five Kinds of Chemicals on Solenopsis invicta

By means of the active mound decrease rate and worker ants decline rate indexes, the author evaluated five chemicals’ efficacy of preventing Solenopsis invicta, including ‘Solenopsis invicta Killer （IV-Type）’, ‘Mieyiwei’, ‘Huoyijing’, ‘Yijingan’ and ‘Mieyihuang’. The results show that there are some differences of the control efficacy between these chemicals. After 21 d treatment,‘Solenopsis invicta Killer（IV-Type）’ and ‘Mieyiwei’ showed good control efficacy. The control efficacy of the nest prevention and worker ants can reach more than 90.0%. It is suggested that we should alternate these two chemicals to delay the drug-resistant of Solenopsis invicta.