摘要
为了降低农药使用量,提高植物源农药防治效果,以小菜蛾为靶标害虫,选用除虫菊素和苦参碱两种植物源农药,按不同比例进行复配,通过室内毒力测定,筛选最佳复配比例。结果显示:除虫菊素和苦参碱复配比例为4∶6(体积比)时,毒效比率为1.36,共毒系数为207.84。田间药效试验结果:最佳配比(4∶6)稀释200倍液时,防效可达到93.67%。除虫菊素与苦参碱复配,对小菜蛾的毒力有显著增效作用,具有开发为复配剂的潜力。
In order to reduce the use of pesticides and improve the control effect of botanical pesticides,with Plutella xylostella as the target pest in this experiment,and pyrethrin and matrine,the two botanical pesticides,were mixed in different proportions to screen the optimal proportion through indoor toxicity determination.The result showed that:when pyrethrin-matrine mixture ratio was 4∶6(volume ratio),the toxicity effect ratio was 1.36,and the co-toxicity coefficient was 207.84;the field efficacy test showed that under the optimal mixture ratio(4∶6)and diluted 200 times,the pesticide had the control effect of 93.67%.Pyrethrin-matrine mixture has a significant syn-ergistic effect on toxicity to P.xylostella,which has the potential to be developed as a compound agent.
作者
谷清义
耿晓桐
马清海
申君
GU Qingyi;GENG Xiaotong;MA Qinghai;SHEN Jun(Xinyang Agriculture and Forestry University,Xinyang,Henan 464000,China)
出处
《农业研究与应用》
2023年第2期37-41,共5页
Agricultural Research and Application
基金
2021年度河南省高等学校重点科研项目(21B210009)
信阳农林学院青年教师科研基金项目(2018LG005)
信阳农林学院青年教师科研基金项目(QN2021060)。
关键词
植物源农药
除虫菊素
苦参碱
小菜蛾
Botanical pesticide
pyrethrin
matrine
Plutella xylostell
