新型杀虫剂50 g/L双丙环虫酯可分散液剂对梨二叉蚜田间药效评价

Field efficacy of afidopyrofen 50 g/L DC against Schizaphis piricola(Matsumura)

为明确新型杀虫剂50 g/L双丙环虫酯可分散液剂对梨二叉蚜的田间防治效果,于2022、2023年在山东省龙口市诸由观镇冷王村进行了田间药效试验。结果表明:50 g/L双丙环虫酯可分散液剂在18 g a.i./hm2用量时防效最好,药后3 d,防效达94.02%以上,药后7 d,防效达92.68%以上,显著优于常规药剂70%吡虫啉水分散粒剂。50 g/L双丙环虫酯可分散液剂在15、12.86 g a.i./hm2时,药后3、7 d防效同样优于70%吡虫啉水分散粒剂。50 g/L双丙环虫酯可分散液剂可有效防治梨二叉蚜,推荐使用剂量15~18 g a.i./hm2,且对梨树安全。

In order to evaluation the field control effect of afidopyrofen 50 g/L DC against Schizaphis piricola(Matsumura),the field trial was carried out in Longkou City,Shandong Province in 2022 and 2023.The results showed that afidopyrofen 50 g/L DC had a good control effect against S.piricola at dosage 12.86 and 18 g a.i./ha,which was significantly better than imidacloprid 70%WG.The control effect was excellent when afidopyrofen 50 g/L DC at dosage 18 g a.i./ha.And the control effect was above 94.02%on the 3 d after application and above 92.68%on 7 d after application.The control effect of afidopyrofen 50 g/L DC at dosage 12.86 and 15 g a.i./ha were also better than imidacloprid 70%WG on 3 and 7 d after application.Afidopyrofen 50 g/L DC had significantly control effect against S.piricola with the recommended dosage of 15-18 g a.i./hm2,and was safe to pear trees.