4种药物对黑胸散白蚁的灭效比较研究

Comparison of test results of four kinds of termiticides against Reticulitermes chinensis in laboratory

目的研究40%毒死蜱乳油1、0%氯菊酯乳油、5%联苯菊酯悬浮剂和10%吡虫啉悬浮剂4种白蚁预防药剂对黑胸散白蚁防治效果差异,为控制房屋建筑白蚁提供理论依据。方法采用滤纸药膜法、毒土法和毒土柱法测定4种白蚁预防药剂对黑胸散白蚁的毒杀和驱避效果。结果 供试的4种药物中,对黑胸散白蚁触杀和驱避效果以40%毒死蜱乳油、5%联苯菊酯悬浮剂最好,10%氯菊酯乳油、10%吡虫啉悬浮剂次之。在4种药剂高浓度组的药液处理土壤时,处理后1～4 d内,4种药剂均可使与毒土接触的黑胸散白蚁全部死亡;4种药剂的毒土穿透试验中,黑胸散白蚁均未能穿透5 cm厚的毒土层。结论供试的4种药物均可用于白蚁预防。但从综合效果而言,生产上仍以应用5%联苯菊酯悬浮剂为佳。

Objective To test the susceptibility of 40% chlorpyrifos EC,5% bifenthrin SC,10% permethrin EC and 10% imidacloprid SC on the workers of Reticulitermes chinensis Snyder.Methods The toxic and repellent effects of four preventive termiticides on the workers of Reticulitermes chinensis Snyder were evaluated by filter paper chemical-dipping method,the toxic soil method and toxic soil pillar method in laboratory.Results Among the four chemicals tested,40% chlorpyrifos EC and 5% bifenthrin SC had the best toxic and repellent effects on the workers of Reticulitermes chinensis Snyder,followed by 10% permethrin EC and 10% imidacloprid SC.The workers of Reticulitermes chinensis Snyder exposed to soil treated in high concentrations of liquids soil treatment,or chlorpyrifos,bifenthrin,permethrin and imidacloprid died within 4 days.The workers of Reticulitermes chinensis Snyder could not pass through 5cm length soil treated,or chlorpyrifos,bifenthrin,permethrin and imidacloprid.Conclusion All these four chemicals tested can be used for the prevention termites.However,considering the control effect and environmental safety,using of 5% bifenthrin SC in termite control of houses and buildings is the best selection for users.