目的 通过对韶关市社区和中山公园进行超低容量夜间和白天喷雾试验，为选用科学有效的杀灭白纹伊蚊技术提供科学依据。方法 于2016年8月15日至9月20日在韶关市社区和公园利用大型车载超低容量喷雾机分别在夜间和白天进行喷药灭蚊，采用人诱指数和诱蚊诱卵器指数（MOI）法对施药前后的伊蚊密度进行监测，评估喷药效果。结果 韶关市碧桂园别墅区夜间和白天喷药后人诱指数下降率分别为98.19%和76.85%，MOI下降率分别为81.15%和43.86%；人诱法相对密度指数分别为3.90和14.25，MOI分别为38.48和24.47。韶关市中山公园夜间和白天施药后人诱指数下降率分别为76.47%和77.78%，MOI下降率分别为-58.54%和76.33%；人诱法相对密度指数分别为33.82和44.44，MOI分别为99.09和45.68。结论 韶关市社区环境中使用超低容量喷雾夜间喷药效果优于白天，可更有效地杀灭蚊虫和保持蚊媒低密度水平，具有一定的应用前景；而中山公园超低容量喷雾夜间、白天药效相差不明显；人诱指数评价超低容量空间喷药灭蚊效果优于MOI。

Objective To assess the mosquito-killing effect of ultra-low-volume spraying machine during night and day in community and Zhongshan Park at Shaoguan, and provide the scientific basis to choose scientific and effective mosquito-killing technology. Methods Used the large vehicle-mounted ultra-low-volume machine spraying pesticide to kill mosquitoes in Shaoguan communities and park environment, respectively during night and day, then evaluated mosquito-killing effect of applying pesticide spray during night and day by Mosq-ovitrap positive index (MOI) and human-bait of monitoring Aedes density before and after applying pesticide. Results After ultra-low-volume spraying during night and day respectively at villa of Shaoguan Country Garden, human-bait index was reduced by 98.19% and 76.85%, MOI by 81.15% and 43.86%; at park, human-bait fell by 76.47% and 77.78% respectively, and MOI fell by -58.54% and 76.33% respectively. Human-bait relative density index of nighttime, daytime spraying at villa was 3.90 and 14.25 respectively, MOI was 38.48 and 24.47; human-bait relative density index at park was 33.82 and 44.44, MOI was 99.09 and 45.68. Conclusion The ultra-low-volume spraying in Shaoguan community environment at nighttime was significantly better than daytime spraying, but in Zhongshan Park the results were similar. In community environment, nighttime ultra-low-volume spraying, compared with spraying during the day, can effectively kill mosquitoes and keep mosquito-borne diseases at low density level, and has a certain application prospect.