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采用目测法与诱测法调查了南宁市城区道路绿地红火蚁发生情况,评价了4种药剂对红火蚁的防治效果。结果表明:南宁市有红火蚁为害的道路占14.49%,青秀区和新建的五象新区红火蚁发生明显重于兴宁区、西乡塘区和江南区等老城区。0.5%氟磺酰胺RG和0.5%氟虫胺RG对红火蚁控制效果明显,药后60 d工蚁减退率分别高达90.04%和88.65%,活蚁巢减退率分别为77.69%和75.57%。5.5%阿维·毒死蜱EC和2.5%高效氯氟氰菊酯EC药液灌巢处理对红火蚁快速触杀效果明显,药后20 d活蚁巢减退率分别高达90.39%和95.83%,而随着时间推移,防效显著降低,药后60 d活蚁巢减退率分别下降至67.53%和58.87%,同时,药液灌巢处理区红火蚁出现蚁群转移现象,处理区域活蚁巢新增率分别为47.00%和104.80%。最后得出南宁市城区道路绿地均有不同程度红火蚁发生为害,且新建绿化区重于老绿化区。两种饵剂控制蚁巢种群效果明显,表现为随着时间的推移,药效逐渐提高,而两种化学药剂对红火蚁种群在短期内具有较强的触杀效果,但随着施药时间延长,药效下降,且出现红火蚁群体转移现象。
The occurrence of Solenopsis invicta Buren in urban greenbelt of Nanning City was investigated by visual inspection and induction method, and the control effects of 4 agents on Solenopsis invicta were evaluated. The results showed that there were 14.49% of the roads damaged by red imported fire ant in Nanning, and the occurrences of red imported fire ant in Qingxiu District and newly-built Wuxiang New Area were obviously heavier than those in Xingning District, Xixiangtang District and Jiangnan District. 0.5% fluorosulfonamide RG and 0.5% flumeseram RG had obvious control effects on R. fire ant, the reduction rates of worker ants reached as high as 90.04% and 88.65% respectively on the 60th day after treatment, and the live nest reduction rates were 77.69% and 75.57% respectively. 5.5% Avastin EC and 2.5% lambda-cyhalothrin EC solution were significantly better than those of the control group (P <0.05). The rate of live nests drop was as high as 90.39% and 95.83% after 20 d Over time, the control effect was significantly reduced, and the reduction rate of live nests decreased to 67.53% and 58.87% respectively after 60 days of treatment. At the same time, the phenomenon of ant colonies of red imported fire ant in anther treatment area appeared. Respectively 47.00% and 104.80%. Finally, it is concluded that the red green ants are harmful to the road greenbelt in Nanning urban area, and the new greenbelt is heavier than the old greenbelt. The effect of controlling two species of nesting nests was obvious. The performance of the two kinds of baits was improved gradually with the passage of time. However, the two chemical agents had a strong contact effect on the population of the red imported fire ant species in the short term. However, , Efficacy decreased, and the emergence of red ants colony transfer phenomenon.