有机硅助剂对杀虫剂防治棉蚜的增效作用 Click here to download the full text Citation：刘向涛,史雪芹,崔丽,陆宴辉.有机硅助剂对杀虫剂防治棉蚜的增效作用.Journal of Plant Protection,2026,53(2):519-526 Hits: Download times: Author Name Affiliation E-mail Liu Xiangtao  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, Xinjiang Uygur Autonomous Region, China    Shi Xueqin  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, Xinjiang Uygur Autonomous Region, China    Cui Li  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China  cuili@caas.cn  Lu Yanhui  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China  luyanhui@caas.cn  中文摘要:为评价有机硅助剂对杀虫剂的增效作用，提高对棉蚜Aphis gossypii的田间防治效果，通过测定有机硅助剂Silwet819、Silwet806、Silwet820和Silwet710的溶液界面特性及其对棉蚜的毒力和对氟啶虫酰胺与氟啶虫胺腈的增效比，筛选出增效作用最显著的助剂，并通过田间药效试验评估其对氟啶虫酰胺的减施增效作用。结果表明：在4种有机硅助剂中，Silwet806对溶液表面张力的降低能力和对叶片上最大持留量的提升能力最佳，Silwet819对溶液在叶片上接触角的降低能力最佳；4种助剂对棉蚜均有一定的杀虫活性，对氟啶虫胺睛和氟啶虫酰胺均有增效作用，且增效作用与助剂的添加量呈正比，0.05%的Silwet819和Silwet806对氟啶虫胺睛的增效比最大，分别为5.12和6.71，对氟啶虫酰胺的增效比也最大，分别达12.80和6.40。选择Silwet806和Silwet819作为最佳助剂，可大幅提高氟啶虫酰胺防治棉蚜时的速效性；氟啶虫酰胺减量20%和50%时，添加0.02%的Silwet806和Silwet819后对棉蚜的防治效果可达常规用量水平，添加0.05%的Silwet806和Silwet819后对棉蚜的防治效果超过常规用量水平。表明有机硅助剂Silwet806和Silwet819通过改变药液物理性状，减少药剂流失，对氟啶虫酰胺和氟啶虫胺腈的增效作用最佳；在田间防治棉蚜时，添加0.02%～0.05%的Silwet819和Silwet806可减少20%～50%的氟啶虫酰胺施用量。 中文关键词:有机硅助剂  棉蚜  杀虫剂  增效比  减量增效   Synergistic effects of organosilicon adjuvants on insecticides for the control of cotton aphid Aphis gossypii Author Name Affiliation E-mail Liu Xiangtao  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, Xinjiang Uygur Autonomous Region, China    Shi Xueqin  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, Xinjiang Uygur Autonomous Region, China    Cui Li  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China  cuili@caas.cn  Lu Yanhui  State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China  luyanhui@caas.cn  Abstract:To evaluate the synergistic effects of organosilicon adjuvants on insecticides and improve the field control efficacy against the cotton aphid Aphis gossypii, the interfacial properties of Silwet819, Silwet806, Silwet820 and Silwet710 were determined. Their toxicities to cotton aphids and their synergistic ratios with sulfoxaflor and flonicamid were determined to identify the most effective adjuvants. Field trials were further conducted to evaluate their effects on reducing the application rate of flonicamid while maintaining efficacy. The results showed that among the four adjuvants, Silwet806 exhibited the strongest ability to reduce surface tension and increase maximum retention on leaf surfaces, while Silwet819 showed the greatest reduction in contact angle of leaves. All four adjuvants displayed certain insecticidal activity against cotton aphids and exhibited synergistic effects with both sulfoxaflor and flonicamid, with synergistic effects positively correlated with adjuvant concentration. At 0.05%, the synergistic ratios of Silwet819 and Silwet806 with sulfoxaflor were 5.12 and 6.71, respectively, and their synergistic ratios with flonicamid reached 12.80 and 6.40, respectively. Silwet806 and Silwet819 were identified as the most effective adjuvants, significantly enhancing the rapid efficacy of flonicamid against cotton aphids. When the application rate of flonicamid was reduced by 20% or 50%, the addition of 0.02% Silwet806 or Silwet819 achieved control efficacy comparable to the conventional dosage, while 0.05% addition resulted in higher control efficacy than the conventional treatment. These results indicate that Silwet806 and Silwet819 are optimal synergists for sulfoxaflor and flonicamid by modifying the physicochemical properties of spray solutions and reducing pesticide loss. In field control of cotton aphids, the addition of 0.02%-0.05% Silwet806 or Silwet819 can reduce flonicamid usage by 20%-50%. keywords:organosilicon adjuvants  Aphis gossypii  insecticides  synergistic ratio  reduced application and enhanced efficacy View Full Text  View/Add Comment  Download reader

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