香葱蓟马防治药剂田间筛选试验初探

Preliminary Study on Pesticides Screening for the Control of Thrips Alliorum

本文研究了丁醚脲、噻虫嗪等11种杀虫剂对香葱蓟马的田间药效及其对香葱的作物安全性。结果表明,乙基多杀菌素、噻虫嗪和呋虫胺对香葱蓟马的防效较好,甲氨基阿维菌素苯甲酸盐和啶虫脒防效次之,试验药剂对香葱安全。结合残留风险控制指标,推荐使用25%噻虫嗪水分散粒剂75g/hm^(2) (有效成分)和2%甲氨基阿维菌素苯甲酸盐乳油3g/hm^(2) (有效成分)防控香葱蓟马,在香葱蓟马始盛期施药1次,安全间隔期为7d,可有效控制蓟马对香葱的危害。

This paper studied the field efficiency of the 11 pesticides(including diafenthiuron and thiamethoxam) against thrips alliorum and their influence on the safety of allium ascalonicum. It had been found that spinetoram, thiamethoxam and dinotefuran performed best in preventing thrips alliorum, followed by emamectin benzoate and acetamiprid. Combined with the residual risk control indicators, it was recommended that 25% thiamethoxam water dispersible granule and 2% emamectin benzoate emulsifiable concentrate to prevent and control thrips alliorum by one treatment during the full incidence beginning period of thrips alliorum, with the safety interval of 7 days. In this way, the damage caused by thrips to Allium ascalonicum could be effectively controlled.