小型植保无人机超低量喷雾对荒漠绿洲麦区小麦白粉病的防治效果

研究小型植保无人机超低量喷雾对小麦白粉病的防治效果,为科学使用小型植保无人机防控小麦病害提供指导。采用随机区组的方法,定点调查各处理小麦白粉病发生情况,评价供试药剂对小麦白粉病的防治效果。结果表明,240 g/L氯氟醚·吡唑酯SC 180 g/hm²、19%啶氧·丙环唑SC 199.50 g/hm²和23%醚菌·氟环唑SC 103.50 g/hm²添加增效剂迈飞对小麦白粉病具有较好的防效,防效分别为77.88%、74.23%和73.26%。42%苯菌酮SC 189.00 g/hm²、430 g/L戊唑醇悬浮剂SC 129.00 g/hm²、75%肟菌·戊唑醇WG 202.50 g/hm²和40%腈菌唑WP 120.00 g/hm²添加增效剂迈飞对小麦白粉病防效在60.90%~65.72%之间。7种药剂均可用于小型植保无人机超低量喷雾防治小麦白粉病,为了减缓抗药性的产生,建议在生产上轮换使用。

Ultra-low Dose Spray of Small Plant Protection UAV: Control Effect on Wheat Powdery Mildew in Desert Oasis Wheat Region

The control effect of ultra-low dose spray of small plant protection UAV on wheat powdery mildew was studied in order to provide guidance for the scientific use of small plant protection UAV to prevent and control wheat diseases. The random block method was used to investigate the occurrence of wheat powdery mildew in each treatment, and the control effects of fungicides on wheat powdery mildew were evaluated. The results showed that 240 g/L Mefentrifluconazole·pyraclostrobin SC with the rate of 180 g/hm², 19% Picoxystrobin·propiconazole SC with the rate of 199.50 g/hm² and 23% Epoxiconazole·kresoxim-methyl SC with the rate of 103.50 g/hm² added with synergist Maifei had good control effects on wheat powdery mildew, and the control effects were 77.88%, 74.23% and 73.26%, respectively. The control effects of 42% Metrafenone SC with the rate of 189.00 g/hm², 430 g/L Tebuconazole SC with the rate of 129.00 g/hm², 75% Trifloxystrobin·tebuconazole WG with the rate of 202.50 g/hm² and 40% Myclobutanil WP with the rate of 120.00 g/hm² added with synergist Maifei on wheat powdery mildew were between 60.90% and 65.72%. The seven kinds of fungicides can all be used for ultra-low dose spray of small plant protection UAV to control wheat powdery mildew, and can be used alternately in production to slow down the emergence of drug resistance.