SHEN Dengrong,HE Chao,ZHANG Rui,et al.Co-toxicity of Imidacloprid With Three Insecticides AgainstThrips on Pomegranate[J].Northern Horticulture,2020,44(15):15-20.[doi:10.11937/bfyy.20200181]
吡虫啉与三种杀虫剂复配对石榴蓟马的联合毒力作用
- Title:
- Co-toxicity of Imidacloprid With Three Insecticides AgainstThrips on Pomegranate
- Keywords:
- imidacloprid; lambda-cyhalothrin; Frankliniella occidentalis; Thrips hawaiiensis; co-toxicity coefficient
- 文献标志码:
- A
- 摘要:
- 以石榴上的2种蓟马(西花蓟马和黄胸蓟马)为试虫,采用浸渍法研究了吡虫啉与辛硫磷、茚虫威和高效氯氟氰菊酯复配对2种蓟马的联合毒力作用。结果表明:吡虫啉对黄胸蓟马和西花蓟马的毒力最高,致死中浓度LC50分别为5129 mg?L-1和8648 mg?L-1,明显好于其它3种杀虫剂。吡虫啉与高效氯氟氰菊酯为最佳配伍组合,复配后对石榴蓟马有明显的增效作用。吡虫啉与高效氯氟氰菊酯配比7∶3对西花蓟马的共毒系数为19482,增效作用最大。吡虫啉与高效氯氟氰菊酯配比3∶2对黄胸蓟马的共毒系数为16117,增效作用最大。吡虫啉与辛硫磷复配表现出相加作用,吡虫啉与茚虫威复配表现出拮抗作用。说明吡虫啉与高效氯氟氰菊酯配比范围在1∶1~7∶3可获得对石榴蓟马良好的增效作用。
- Abstract:
- Two species of thrips (Frankliniella occidentalis and Thrips hawaiiensis) on pomegranate was used as test insect,the co-toxicity of imidacloprid with phoxim,indoxacarb and lambda-cyhalothrin against two species of thrips were tested by impregnation method.The results showed that imidacloprid had the highest toxicity to Thrips hawaiiensis and F.occidentalis,and median lethal concentration (LC50) was 5129 mg?L-1 and 8648 mg?L-1,respectively,which was significantly better than the other three insecticides.The combination of imidacloprid and lambda-cyhalothrin was the best,and the combination had obvious synergistic effect to thrips on pomegranate.The co-toxicity coefficient of imidacloprid and lambda-cyhalothrin to F.occidentalis was 19482 at the ratio of 7∶3,and the synergistic effect was the largest.The co-toxicity coefficient of imidacloprid and lambda-cyhalothrin to T.hawaiiensis was 16117 at the ratio of 3∶2,and the synergistic effect was the largest.The combination of imidacloprid and phoxim showed additive effect,and the combination of imidacloprid and indoxacarb showed antagonistic effect.These results showed that the ratio range of imidacloprid and cyhalothrin was 1∶1 to 7∶3,it had a good synergistic effect to thrips on pomegranate.
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备注/Memo
第一作者简介:沈登荣(1982-),男,博士,讲师,现主要从事昆虫生态与害虫综合治理等研究工作。E-mail:ynshdr@126.com.责任作者:何超(1979-),男,博士,讲师,现主要从事昆虫生理生态学等研究工作。E-mail:hechao1022@163.com.基金项目:云南省地方本科高校联合基金资助项目(2017FH001-038);云南省教育厅科研基金资助项目(2013Z148);红河学院博士科研启动专项资助项目(14bs15)。收稿日期:2020-01-12