几种药剂混用对稻纵卷叶螟的防效调查

Investigation on the efficacy of mixed insecticides against the Cnaphalocrocis medinalis

为探究多杀·茚虫威、多杀霉素和四唑虫酰胺等杀虫剂与阿维菌素混用对稻纵卷叶螟的防治效果和持效期,以及药剂混用对水稻的安全性,本研究开展了田间防效试验。结果表明,15%多杀·茚虫威SC等杀虫剂与10%阿维菌素SC混配施用对稻纵卷叶螟防效明显,危害稳定期调查,15%多杀·茚虫威SC 300 mL/hm^(2)与10%阿维菌素SC 750 mL/hm^(2)混用、200 g/L四唑虫酰胺SC 150 mL/hm^(2)与10%阿维菌素SC 750 mL/hm^(2)混用两次施药处理对稻纵卷叶螟防效在95%以上。建议防治稻纵卷叶螟在卵孵高峰期茎叶喷雾施药,采取15%多杀·茚虫威SC 300 mL/hm^(2)与10%阿维菌素SC 750 mL/hm^(2)混用,或200 g/L四唑虫酰胺SC 150 mL/hm^(2)与10%阿维菌素SC 750 mL/hm^(2)混用。

To investigate the control efficacy and duration of mixed insecticides such as spinosad+indoxacarb indoxacarb,spinosad,and tetraniliprole mixed with abamectin against the Cnaphalocrocis medinalis,as well as the safety of these mixtures on rice,a field efficacy trial was conducted.The results showed that the application of 15%indoxacarb SC and other insecticides mixed with 10%abamectin SC significantly controlled the Cnaphalocrocis medinalis.During the stable period of damage,the mixtures of 15%indoxacarb SC at 300 mL/hm^(2)with 10%abamectin SC at 750 mL/hm^(2)and 200 g/L tetraniliprole SC at 150 mL/hm^(2)with 10%abamectin SC at 750 mL/hm^(2),applied twice,provided control efficacy against the Cnaphalocrocis medinalis of over 95%.It was recommended to spray the mixture of 15%indoxacarb SC at 300 mL/hm^(2)with 10%abamectin SC at 750 mL/hm^(2),or 200 g/L tetraniliprole SC at 150 mL/hm^(2)with 10%abamectin SC at 750 mL/hm^(2),on the stems and leaves during the peak hatching period of the eggs to control the Cnaphalocrocis medinalis.