适宜药液量和助剂对植保无人机喷雾雾滴沉积及防治水稻稻瘟病药效的影响

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关键词：植保无人机；药液量；雾滴沉积；稻瘟病；防治效果中图分类号： S435.111.4+1 文献标识码：A文章编号：0439-8114（2026）01-0073-05DOI：10.14088/j.cnki.issn0439-8114.2026.01.013

Effects of suitable spray volume and adjuvant on droplet deposition of plant protection UAV andcontrol efficacyagainstriceblast disease

YANGShu-lan 1 ，ZHONG Guo-hua²，ZHANG Yang1，YANG Wen-xi¹，LU Xiang-yu1，LUO Yan-mei，LUO Jing-sheng （1.Guangxiad;ou University，Guangzhou 510642，China）

Abstract： Field trials were conducted using a plant protection UAV for spraying 400g/L tebuconazole·prochloraz emulsion in water （EW），toinvestigate tefetsofdierentsprayvoumsanddjuvantadditionondopletdeposition，dropletdensity，petideutilizationrate，andcontrolefcacyagainstriceblastinricecanopies.Resultsshowedthat，undertherecommendeddosageof 525mL/hm2 ， thedropletdeposition，density，pesticideutilizationrate，andcontroleficacyweregenerallybeterwithsprayvolumesof.5L/m and 30L/hm2 compared to 15L/hm2 .Adjuvant addition significantly improved all measured parameters.Particularly under the condition of 22.5 L/hm² spray volume combined with adjuvant （added at 337.5mL/hm2 ），droplet deposition performance and pesticide utilization were favorable，with the highest pesticide utilization rate reaching 52.39% ，and control efficacy against rice blast remaining above 81% after two applications，showing no significant diference from the 30L/hm2 treatment. For practical application，the spray volume of 22.5L/hm2 with the corresponding proportion of adjuvant was recommended，which could ensure control efficacy while enhancing application efficiency and comprehensive benefits.

Key words： plant protection UAV；spray volume; droplet deposition; rice blast; control efficacy

水稻是中国主要粮食作物，“十四五"以来，水稻年产量始终稳定在2.0亿t以上，为保障国家粮食安全、促进经济社会稳定发展作出了重要贡献[1]。（剩余6601字）