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在室内生测验证具有明显增效的基础上,通过对湿润分散剂、防冻剂、消泡剂、增稠剂进行筛选,确定了25%甲维·虫酰肼悬浮剂的较佳配方,并对其稳定性和田间药效进行验证。验证实验结果表明,25%甲维·虫酰肼悬浮剂的各项指标均能达到质量技术标准。田间药效试验结果表明,25%甲维·虫酰肼悬浮剂以有效成分190~220 g/hm2防治甘蓝甜菜夜蛾,防效可达61.31%~83.81%,不低于1%甲氨基阿维菌素苯甲酸盐乳油(2.0 g/hm2)、20%虫酰肼悬浮剂(280 g/hm2)的防效,持效期达14 d。
Based on the obvious synergies of indoor bioassay, the best formula of 25% carbaryl hydrazide suspending agent was determined through screening of wetting and dispersing agent, antifreeze, antifoaming agent and thickener Its stability and field efficacy were verified. The results of the verification experiment show that all the indexes of 25% carbaryl hydrazide suspension can meet the quality and technical standards. The results of the field efficacy test showed that the control efficacy of 25% carbaryl hydrazide as the effective component 190 ~ 220 g / hm2 was 61.31% ~ 83.81%, no less than 1% methionine The control effect of vitamin A benzoin EC (2.0 g / hm2) and 20% tebufenozide suspension (280 g / hm2) was maintained for 14 days.