摘要
测试不同施药方式对田间玉米草地贪夜蛾的防治效果,为药剂的合理选择和使用提供参考.参照《农药田间药效试验准则》相关标准进行田间试验,采用种子包衣、叶面喷雾、心叶点施等措施,测定 3 种施药方式对玉米田草地贪夜蛾的防治效果.50%氯虫苯甲酰胺种子处理悬浮剂和 40%溴氰虫酰胺·噻虫嗪种子处理悬浮剂在出苗后 14 d对草地贪夜幼虫最高防治效果为 83.88%和 83.84%;甘蓝夜蛾核型多角体病毒和斜纹夜蛾核型多角体病毒对草地贪夜蛾幼虫的防治效果为 88.92%和 84.70%;虱螨脲、氟铃脲和杀铃脲的防治效果分别为 86.52%、84.26%和 81.44%;虫螨腈、四唑虫酰胺、溴虫氟苯双酰胺、乙基多杀菌素和甲氨基阿维菌素苯甲酸盐的防治效果均在 88%以上.建议种子处理剂+叶面喷雾或种子处理剂+心叶点施的综合防控措施,选取不同作用方式的杀虫剂轮换使用,延缓害虫抗耐药性的产生.
Abstract
To test the effects of different application methods on the damage control in Spodoptera frugiperda and provide a reference for the rational selection and use of medicine,according to the relevant standards of the"Guidelines for Field Effi-cacy Trials of Pesticides",the control effects of three application methods on Spodoptera frugiperda in maize fields were measured via seed coating,leaf spraying,and heart leaf point application.The maximum control effects of 50%Chloroben-zamide FS and 40%Bromofenamide·Thiamethoxam FS were 83.88%and 83.84%,respectively,at 14 days after emergence.The control effectiveness against Spodoptera frugiperda larvae was 88.92%for Mamestra brassicae multiple NPV and 84.70%for spodopteralitura NPV.The control effects of acarbazide,fluvulurea,and subicarbazide were 86.52%,84.26%,and 81.44%,respectively.The control efficiency of fenacil,tetrazolamide,bromofluramide,ethidocidin,and emamectin benzoate exceeded 88%.The comprehensive control measures of seed treatment agents+leaf sprays or seed treatment agents+trumpet point application should be adopted,and different insecticides with different modes of action should be used in rotation to delay the generation of resistance.
基金项目
广西自然科学基金项目(2020GXNSFAA159158)
NETL
NSTL
万方数据