灭蚁威对不同生境下红火蚁的药效评价

在红火蚁发生区域选农田、山坡地、绿化带、草坪等4个不同生境地块，采用灭蚁威毒饵进行防治试验，并对其药效进行调查。结果显示，药后10 d，灭蚁威对红火蚁蚁巢的防效较差，且表现出不同生境而有所差异；但在药后35 d时，其对蚁巢和工蚁的校正防效均在95%以上，表现出良好的防治效果。本试验结果表明，灭蚁威的药效需一个月后才能充分发挥；在红火蚁发生区，对不同的生境均可采用灭蚁威饵剂进行防治。

Evaluation on the Control of Mieyiwei Bait against Solenopsis invicta under Varied Ecological Niches

In four areas of farmlands, hillside lands, greenbelts and lawns infected the red imported fire ants, Solenopsis invicta Buren, the efficiencies of Mieyiwei bait against S. invicta were investigated. The result showed that efficiencies of treatment after 10 days using this toxin bait were differed in these four infected areas, and all were relatively poor. However, 35 days later, they all showed excellent efficiencies. In which, the correction control effects against ant nests and worker termites in all the four infected areas attained to be more than 95%. This study indicated that the Mieyiwei bait was ideal to control the red imported fire ant in infected areas with varied ecological niches, however, the treatment time should be last for more than one month.