华中地区稻纵卷叶螟对七种杀虫剂的敏感性监测
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华中农业大学

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农业部公益性行业(农业)科研专项


Monitoring of susceptibilities to seven insecticides of Cnaphalocrocis medinalis Guenée in the central regions of China
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    摘要:

    摘要:【目的】持续监测稻纵卷叶螟田间种群对杀虫剂的敏感性,是其防治与抗药性治理的重要措施,本研究旨在探析湖北、湖南、江西、安徽和河南地区水稻上主要害虫稻纵卷叶螟田间种群对常用杀虫剂的敏感性。【方法】采用叶片浸渍法测定了2015~2019年湖北赤壁、武穴、武汉、孝感、黄岗、湖南长沙、江西南昌、萍乡、安徽合肥和河南信阳共10个地区稻纵卷叶螟田间种群对毒死蜱、茚虫威、乙基多杀菌素、阿维菌素、氯虫苯甲酰胺、溴氰虫酰胺和氟苯虫酰胺7种杀虫剂的敏感性,并对数据进行聚类分析和回归分析。【结果】1、稻纵卷叶螟田间种群对7种杀虫剂敏感性差异明显,杀虫剂的毒力次序为氟苯虫酰胺≥阿维菌素≥乙基多杀菌素>氯虫苯甲酰胺≥茚虫威>溴氰虫酰胺>毒死蜱;2、不同地区稻纵卷叶螟种群对杀虫剂的敏感性差异不明显;3、不同年份之间差异显著。一些种群对毒死蜱、氯虫苯甲酰胺、茚虫威和溴氰虫酰胺的敏感性年度间存在明显差异。如赤壁和长沙种群对毒死蜱的敏感性从2015年至2016年下降了2.3~4.1倍;赤壁、孝感、长沙和合肥种群对毒死蜱的敏感性从2016年至2019年上升了2.1~4.9倍;赤壁、武穴和孝感种群对氯虫苯甲酰胺的敏感性从2015年至2019年下降了2.6~7.3倍;武穴种群对茚虫威的敏感性从2015年至2018年下降了4.2~4.7倍;武穴和长沙种群对溴氰虫酰胺的敏感性从2015年至2018年抗性下降了2.2~6.7倍。【结论】目前华中地区稻纵卷叶螟田间种群对氯虫苯甲酰胺等的敏感性下降趋势很明显,因此对氯虫苯甲酰胺等的抗性治理显得非常重要,目前田间稻纵卷叶螟防治优先推荐阿维菌素、乙基多杀菌素和溴氰虫酰胺等交替轮换使用。

    Abstract:

    Abstract: [Aim] Continuously monitoring of the susceptibilities of Cnaphalocrocis medinalis field populations to insecticides is an important measure for the control and resistance management of C. medinalis. The present study aims to detect the susceptibilities to commonly used insecticides of C. medinalis field populations in Hubei, Hunan, Jiangxi, Anhui and Henan provinces. [Methods] The leaf-dipping method was used to detect susceptibilities to seven insecticides of C. medinalis field populations in Chibi, Wuxue, Wuhan, Xiaogan, Huanggan, Changsha, Nanchang, Pingxiang, Hefei and Xinyang in 2015~2019. In addition, cluster and regression analyses are performed on the detected data. [Results] 1. There were significant differences among the toxicities of seven insecticides against C. medinalis field populations. The order of the toxicity of seven insecticides is fluorobenzamide ≥ abamectin ≥ spinetoram > chlorantraniliprole ≥ indoxacarb > cyantraniliprole > chlorpyrifos. 2. No significant susceptibility difference was detected among different populations of C. medinalis. 3. There was significant difference between years. Significant changes of sensitivities in different years were found among some populations to chlorpyrifos, chlorantraniliprole, indoxacarb and cyantraniliprole. The susceptibility levels of Chibi and Changsha populations of C. medinalis to chlorpyrifos decreased by 2.3- and 4.1-fold from 2015 to 2016. The susceptibility levels of Chibi and Changsha populations to chlorpyrifos increased by 2.1- and 4.9-fold from 2016 to 2019. The susceptibility levels of Chibi, Wuxue and Xiaogan populations to chlorantraniliprole decreased by 2.6- and 7.3-fold from 2015 to 2019. The susceptibility level of Wuxue population to indoxacarb decreased by 4.2- and 4.7-fold from 2015 to 2018. The susceptibility levels of Wuxue and Changsha population to cyantraniliprole decreased by 2.2- and 6.7-fold from 2015 to 2018. [Conclusion] The susceptibility levels of C. medinalis field populations to chlorantraniliprole and other insecticides in central China are decreasing significantly, so that the resistance management for these insecticides is very important currently. Abamectin, spinetoram and cyantraniliprole can be preferentially recommended for the control of C. medinalis, under a rotation manner.

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  • 收稿日期:2020-11-12
  • 最后修改日期:2021-01-04
  • 录用日期:2021-03-01
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