11种药剂对烟草侧多食跗线螨的田间药效

Field Efficacy of Eleven Kinds of Pesticides on Polyphagotarsonemus latus in Tobacco

烟草侧多食跗线螨在云南省新平县严重发生,为筛选出高效且安全的杀螨剂,在田间测定了11种药剂对该螨的药效活性。结果表明,30%阿维菌素·螺螨酯悬浮剂、40%阿维菌素·炔螨特乳油、10%阿维菌素·哒螨灵水乳剂防效最快,在药后3 d即能达到较好效果;其次,20%阿维菌素·丙溴磷乳油、240 g/L螺螨酯悬浮剂、20%丁氟螨酯悬浮剂、1.8%阿维菌素乳油,20%四螨嗪悬浮剂、15%哒螨灵乳油、35%哒螨灵·螺螨酯悬浮剂,在药后7 d达到最佳防效。建议在生产上优先选用30%阿维菌素·螺螨酯悬浮剂、40%阿维菌素·炔螨特乳油和10%阿维菌素·哒螨灵水乳剂,其他几种药剂可交替轮换使用。

Polyphagotarsonemus latus in tobacco occurred in Xinping County of Yunnan Province seriously. In order to select efficient and safe acaricides to control the aearid, efficacy of eleven kinds of pesticides on the acarid was measured in the field. The results showed that 30% Avermectino .Spirodi-clofen SC,40% Avermectino · Propargite EC and 10% Avermectino-Pyridaben EW could achieve the fast effect after 3 days. Secondly, 20% Avermectino .Pro- fenofos EC, 240 g/L Spirodiclofen SC, 20% Cyflumetofen SC, 1.8% Avermectin EC, 20% Clofentezine SC, 15% Pyrid- aben EC and 35% Pyridabeno·Spirodiclofen SC could achieve the best effect after 7 days. As a conclusion, 30% Avermectino .Spirodiclofen SC,40% Avermectino .Propargite EC and 10% Avermectino .Pyridaben EW are pre-ferred to use in production, other pesticides can be used alternately.