不同助剂对茶园植保无人机喷雾性能及茶小绿叶蝉防控效果的影响

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中图分类号：S252.3 文献标志码：A 文章编号：1004-390X（2025）05-0045-08

Abstract： [Purpose] To reduce insecticide drift during the control of Empoasca pirisuga Matumura by plant protection unmanned aerial vehicles （UAVs）， improving control efficiency by increasing deposition amount. [Methods] Using allure red as a tracer and 2.5% beta-cyfluthrin emulsion as a control agent， in the initial stage of E. pirisuga，the DJI MG-1P plant protection UAV was used to evaluate the effects of difrent auxiliaries （Red Sun， neem oil， and plant oil） on the atomization performance， deposition amount， and control effect of 0.3% azadirachtin emulsion. The residue amount after 10 and 2O days of azadirachtin application was determined. [Results] The deposition distribution of droplets on different parts of tea tree was as follows： canopy>middle layer>bottom layer. The addition of plant oil and neem oil increased the coverage rate and deposition amount of droplets. Specifically， the plant oil produced droplets with a D50 of 349.60μm and a D90 of 709.80μm ，while neem oil significantly increased droplet density to 120.58cm-2 .After10 days of spraying， the control efficacy of 0.3% azadirachtin emulsion combined with plant oil and Red Sun against E pirisuga was 62.97% and 60.38% ，respectively; after 2O days of spraying， they still maintained the highest control efficacy，which were 57.74% and 59.95% ，respectively.The azadirachtin residue amount in tea was 0.0014mg/kg and 0.0009mg/kg respectively after 10 and 20 days of spraying. [Conclusion] Plant oil and Red Sun can improve the spray performance of plant protection UAVs， increase droplet deposition amount and promote control effect against E pirisuga.

Keywords： tea tree; plant protection unmanned aerial vehicles; auxiliary; azadirachtin; atomization performance; control efficacy

近年来，茶树虫害在很大程度上制约了茶产业发展。（剩余9916字）