Dose-reduction and efficacy-enhancement effects of spray adjuvants on controlling rice planthopper in plant protection drone spraying

ZHANG Jiantao; ZHANG Haodong; LI Junjie; LIU Wen

doi:10.13300/j.cnki.hnlkxb.2026.03.020

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Dose-reduction and efficacy-enhancement effects of spray adjuvants on controlling rice planthopper in plant protection drone spraying

Plant protection | 更新时间：2026-11-05

- Dose-reduction and efficacy-enhancement effects of spray adjuvants on controlling rice planthopper in plant protection drone spraying
- Journal of Huazhong Agricultural University Vol. 45, Issue 3, Pages: 225-234(2026)
- 作者机构：
  
  1.华南农业大学数学与信息学院，广州 510642
  2.国家精准农业航空施药技术国际联合研究中心，广州 510642
  3.热带南亚智慧农业技术重点实验室，广州 510642
  4.仲恺农业工程学院资源与环境学院，广州 510550
- 作者简介：
- 基金信息：
- DOI：10.13300/j.cnki.hnlkxb.2026.03.020
  CLC： S252⁺.3
- Received：02 October 2025，
  
  Published：25 May 2026
- 稿件说明：
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张建桃，张昊东，李俊杰，等.喷雾助剂对植保无人机施药防治稻飞虱的减量增效作用探究［J］.华中农业大学学报，2026，45（3）：225‐234.

ZHANG Jiantao,ZHANG Haodong,LI Junjie,et al.Dose-reduction and efficacy-enhancement effects of spray adjuvants on controlling rice planthopper in plant protection drone spraying[J].Journal of Huazhong Agricultural University,2026,45(03):225-234.
张建桃，张昊东，李俊杰，等.喷雾助剂对植保无人机施药防治稻飞虱的减量增效作用探究［J］.华中农业大学学报，2026，45（3）：225‐234. DOI： 10.13300/j.cnki.hnlkxb.2026.03.020.

ZHANG Jiantao,ZHANG Haodong,LI Junjie,et al.Dose-reduction and efficacy-enhancement effects of spray adjuvants on controlling rice planthopper in plant protection drone spraying[J].Journal of Huazhong Agricultural University,2026,45(03):225-234. DOI： 10.13300/j.cnki.hnlkxb.2026.03.020.

摘要

针对植保无人机施药中农药利用率低、雾滴飘移严重等问题，将室内表面张力测定与田间试验相结合，综合分析药液理化性质、雾滴沉积量、田间防效、土壤残留及经济成本等指标，系统评估了2类喷雾助剂（飞防专用增效剂 VF-3 与复方柠檬精油）对新型介离子杀虫剂10%三氟苯嘧啶悬浮剂及传统新烟碱类杀虫剂10%烯啶虫胺水剂在稻飞虱防治中的减量增效作用。结果显示：添加助剂显著降低药液表面张力，提升叶面沉积量（增幅达58.6%~95.0%），其中 VF-3 效果优于柠檬精油；85%推荐剂量配施 VF-3为最优减量方案，85%推荐剂量的三氟苯嘧啶配施VF-3助剂在减少15%农药用量的同时，14 d 校正防效达79.92%，较全剂量对照提升10.46%，且土壤残留降低32.9%；Pearson 相关性分析显示，早期（3~7 d）防效与叶面沉积量高度正相关（

0.87，

0.001），而长期（14 d）防效主要受药剂内在持效性主导；经济效益分析表明，85%推荐剂量的三氟苯嘧啶配施VF-3助剂在保障高效防控的同时实现成本优化（172.35元/hm

）。结果表明，助剂的减量增效不仅取决于药液表面张力降低程度，更与其对雾滴沉积行为与植株-土壤系统分配的综合调控能力相关。

Abstract

Indoor measurement of surface tension was combined with field experiments to solve the problems including the low utilization of pesticide and severe drift of droplet in the application of crop protection drone spraying. A comprehensive analysis was conducted on indexes including the physical and chemical properties of the pesticide solution，deposition of droplet，control efficacy in field，residue in soil，and economic costs. The dose -reduction and efficacy-enhancement effects of two spray adjuvants-FTRT® VF-3 （a specialized adjuvant for drone spraying） and a compound lemon essential oil-on the novel mesoionic insecticide 10% triflumezopyrim suspension concentrate and the conventional neonicotinoid 10% nitenpyram aqueous solution for rice planthopper control were systematically evaluated. Results showed that both adjuvants significantly reduced solution surface tension and enhanced leaf deposition （the increase ranging from 58.6% to 95.0%），with VF-3 outperforming lemon essential oil. The optimal dose-reduction strategy was achieved at 85% of the recommended dose combined with VF-3： treatment T2 （triflumezopyrim+VF-3） and T7 （nitenpyram+VF-3）. T2 reduced application of pesticide by 15% while achieving a 14-day corrected control efficacy of 79.92%，representing a 10.46% improvement over the full-dose control and a 32.9% reduction of resi

due in soil. The result of Pearson correlation analysis showed that there was a strong positive relationship between early-stage efficacy （3-7 days post-application） and deposition of droplet （

0.87，

0.001），whereas long-term efficacy （14 days） was primarily governed by the intrinsic persistence of the active ingredient. Economic analysis confirmed that T2 offered an optimal balance，achieving high efficacy at a cost of ¥172.35 yuan/hm

. The efficacy of adjuvants was not solely determined by the reduction of surface tension but rather by their integrated effects on the deposition of droplet and the partitioning of pesticide within the plant-soil system. It will provide both theoretical insights and a practical，scalable approach for the precision application of drone spraying and the green reduction of pesticide in rice production.

关键词

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references

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