0.2%阿维菌素油剂飞机超低量喷雾防治落叶松毛虫效果调查

Investigations on the effect of ultra-low volume aerial spray using 2% avermectin finish and control of Dendrolimua superans

2012年5月26日至6月1日,应用M-18B型飞机和0.2%阿维菌素油剂对和龙林业局广坪林场发生的落叶松毛虫进行了飞机超低量喷雾防治,结果表明:防治林分中雾滴的平均直径为72.8～77.2μm,平均雾滴密度为17.61～18.33个.cm-2;飞防48 h后,落叶松毛虫平均校正死亡率高达99.8%。

The research based on ultra -low volume aerial spray using pesticid of 2% avermectin finish against Dendrolimua superans in Guangplng forest centre of Helung forestry bureau on May 26 th to June 1st , 2012. The result showed that average diameter of fngdrop was 72.8 - 77.2 pan , average density of fngdrop was 17.61 - 18.33 per cm2 in the control stand;The average correction mortality reached up to 99.8%, 48 hours later after aerial control.