两种氟虫双酰胺复配制剂对水稻稻纵卷叶螟的防治效果

Efficacy of Two Flubendiamide-mixtures Against Cnaphalocrocis medinalis

对两种氟虫双酰胺复配制剂防治水稻稻纵卷叶螟进行了试验,并考查了其对稻飞虱发生的影响。田间试验结果表明,48%氟虫双酰胺.噻虫啉SC 30、60、120 g/hm2处理防治水稻稻纵卷叶螟的保叶效果为94.28%～98.46%,杀虫效果为96.90%～100%;10%氟虫双酰胺.阿维菌素SC 22.5、45 g/hm2处理的保叶效果为89.39%～96.63%,杀虫效果为91.73%～94.62%。两种药剂使用后,稻飞虱发生量较空白对照降低20.08%～46.91%。两种氟虫双酰胺复配制剂对稻纵卷叶螟具有良好的防治效果,对后期稻飞虱的发生有一定的抑制效果。

The effects of two flubendiamide compositional formulations against Cnaphalocrocis medinalis were tested,and their influence on Nliaparvata lugens and Sogatella furcifera occurrence was examined.The results of field trials showed that the leaf-protecting and insecticidal efficacy of flubendiamide ＋ thiachopriol 48% SC at 30,60 and 120 g/hm2 against C.medinali were 94.28%-98.46% and 96.90%-100%,respectively.The leaf-protecting and insecticidal efficacy of flubendiamide ＋ avemectin 10% SC at 22.5 and 45 g/hm2 against C.medinali were 89.39%-96.63% and 91.73%-94.62%,respectively.The occurrence numbers of Nliaparvata lugens and Sogatella furcifera in the treatment area of two compositional formulation were 20.08%-46.91% lower than that in the non-treatment area.The two flubendiamide compositional formulation had good efficacy against Cnaphalocrocis medinalis,and the occurrence number of Nliaparvata lugens and Sogatella furcifera in later period was reduced.