植保无人机施药对二化螟和稻纵卷叶螟的防治效果

Effects of Spraying Insecticides with UAV on Controlling Chilo suppressalis and Cnaphalocrocis medinalis

为了积极推广无人机植保作业,在湖南省临湘市开展植保无人机施药防治二化螟和稻纵卷叶螟的田间试验,考察了植保无人机施药对二化螟和稻纵卷叶螟的防治效果。结果表明:采用植保无人机施用0.4%氯虫苯甲酰胺GR 60 g/hm^(2)和20%氯虫苯甲酰胺SC 30 g/hm^(2)对二化螟的防治效果,与人工施用20%氯虫苯甲酰胺SC 30 g/hm^(2)之间均无显著性差异,调查期间防效均超过94.97%;同时,采用植保无人机防治稻纵卷叶螟同样表现出较为理想的效果,调查期间对稻纵卷叶螟防效均在95.13%及以上,植保无人机施药条件下氯虫苯甲酰胺不同剂型和不同剂量处理对稻纵卷叶螟的防效与人工施药20%氯虫苯甲酰胺SC 30 g/hm^(2)之间均无显著性差异。

Chilo suppressalis and Cnaphalocrocis medinalis are the most important rice pests in Hunan Province.In this paper,the effects of spraying insecticides with unmanned aerial vehicle(UAV)on controlling Chilo suppressalis and Cnaphalocrocis medinalis were studied,using manual spraying as control(knapsack electric sprayer).The results showed that using UAV to spray 0.4%chlorantraniliprole GR(60 g/hm^(2))or 20%chlorantraniliprole SC(30 g/hm^(2))was not significantly different from using knapsack electric sprayer to spray 20%chlorantraniliprole SC(30 g/hm^(2))in controling Chilo suppressalis,of which the control effects were all more than 94.97%.UAV spraying also achieved a good control for Cnaphalocrocis medinalis with the efficacy above 95.13%;moreover,the control effects of UAV spraying with different types and dosages of chlorantraniliprole preparations on Cnaphalocrocis medinalis were not significantly different from those of manual spraying with 20%chlorantraniliprole SC(30 g/hm^(2)).