植保无人机施药液量及施药高度对稻纵卷叶螟防效的影响

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中图分类号 文献标识码A 文章编号 1007-7731（2025）16-0102-04

DOI号 10.16377/j.cnki.issn1007-7731.2025.16.022

AbstractTo investigate the influence of pesticide application parameters of plant protection drones on the control effcacyagainst Cnaphalocrocis medinalis，field experimentswere conductedusing the DJI T4O protection drone. Different spraying volumes （A1， 30.0L/hm2 ； A2， 45.0L/hm2 ; A3， 67.5L/hm2 ）and spraying heights （B1，3 m; B2，4 m） were set as dual-factor combination treatments.The leaf protection eficacy and pest population control efficacy were systematicalyevaluatedat7and15days afterapplication.Theresultsshowed thattheA3-B1 treatment exhibited the best performance among all treatments，with leaf protection efficacies of 93.77% and 92.58% ，and pest population control efficacies of 94.76% and 94.10% at7and 15 days after application，respectively.The analysis of variance indicated that the spraying volume hada significant effect onthecontrol eficacy against Cnaphalocrocis medinalis（ P< 0.01），whilethe spraying heightand its interaction withthe spraying volumeshowedno statistically significant impact ！ P>0.05 .Considering both control effcacyand operational efciacy，two parameter combinations were recommended：a spraying volume of 45.0L/hm2x spraying height of 3m （optimal operational efficiency） and a spraying volume of 67.5L/hm2× spraying height of 3m （optimal control efficacy）. The research results provide a reference for precise prevention and control of Cnaphalocrocis medinalis by crop protection drones.

Keywordsplant protection drone; spraying volume; spraying height; Cnaphalocrocis medinalis; control efficacy

稻纵卷叶螟（Cnaphalocrocismedinalis）是部分水稻种植区危害较严重的迁飞性害虫之一，属于鳞翅目螟蛾科。（剩余4319字）