摘要
为明确5种杀虫剂对苹果蠹蛾的毒杀作用,减少药剂使用量和延缓其抗药性发展。本研究采用浸泡果实法测定了5种杀虫剂对苹果蠹蛾3龄幼虫的生物活性及2种药剂以不同配比复配后的增效作用。5种药剂中0.05%甲氨基阿维菌素苯甲酸盐WG对苹果蠹蛾3龄幼虫的毒力最强,LC50为0.27 mg/L;其次为60 g/L乙基多杀菌素SC,LC50为0.93 mg/L;200 g/L四唑虫酰胺SC、10%溴氰虫酰胺OD和200 g/L氯虫苯甲酰胺SC的毒力较弱,LC50为6.52~10.34 mg/L。药剂复配结果表明:0.05%甲氨基阿维菌素苯甲酸盐WG与10%溴氰虫酰胺OD有效成分(1∶1)复配时对苹果蠹蛾3龄幼虫具有增效作用,共毒因子为20.38。最佳配比试验结果表明:0.05%甲氨基阿维菌素苯甲酸盐WG与10%溴氰虫酰胺OD配比为1∶2、1∶1和5∶1时均具有增效作用,其中配比为1∶2时增效作用最为显著,共毒系数为268。防治苹果蠹蛾时,单剂可选择0.05%甲氨基阿维菌素苯甲酸盐WG和60 g/L乙基多杀菌素SC,复配可选择0.05%甲氨基阿维菌素苯甲酸盐WG与10%溴氰虫酰胺OD有效成分(1∶2)的组合。
t To clarify the toxic effects of five insecticides on Cydia pomonella,reduce the use of pesti-cides,and delay the development of their resistance.The biological activity of five insecticides on the 3rd instar larvae of Cydia pomonella was measured using the soaking fruit method,and the synergistic effect of two insecticides mixed in different ratios was studied.Among the five pesticides,0.05%Emamectin benzoate WG exhibited the highest toxicity towards the 3rd instar larvae of the Cydia pomonella,with an LCso of 0.27 mg/L.Following this,60 g/L Spinetoram SC demonstrated the next highest toxicity,with the LCso of 0.93 mg/L;The remaining pesticides,including 200 g/L Tetraniliprole SC,10%Cyantraniliprole OD,and 200 g/L Chlorantraniliprole SC,displayed comparatively lower toxicity,with LCso values ranging from 6.52 to 10.34 mg/L.The results of drug combination study revealed that the combination of 0.05%E-mamectin benzoate WG and 10%Cyantraniliprole OD active ingredient t(in l:1 ratio)exhibited a syner-gistic effect on the 3rd instar larvae of Cydia pomonella,with a co-toxicity factor of 20.38.The results of the optimal ratio test demonstrated a synergistic effect when varying the ratio of 0.05%Emamectin benzoate WG to 10%Cyantraniliprole OD at 1:2,1:1,and 5:1.Notably,the most significant synergistic ef-fect was observed at the 1:2 ratio,yielding a co-toxicity coefficient of 268.When controlling Cydia pomonel-la,a single dose of 0.05%Emamectin benzoate WG or 60 g/L Spinetoram SC is recommended.Addition-ally,a combination of 0.05%Emamectin benzoate WG and 10%Cyantraniliprole OD effective ingredients(at a ratio of 1:2)can be utilized effectively in a compound solution.
作者
张旭
陆占军
杜伟
张建英
贾龙
Zhang Xu;Lu Zhanjun;Du Wei;Zhang Jianying;Jia Long(Ningxia University,Yinchuan 750021,China;Ningxia Hui Autonomous Region Agricultural Technology Popularization Station)
出处
《植物检疫》
2024年第3期47-51,共5页
Plant Quarantine
基金
宁夏回族自治区重点研发计划项目资助(2022BBF02027)。
