甘蔗土栖害虫Alissonotum impressicolle Arrow抗药性监测与抗性治理

本文报道了我国甘蔗土栖害虫Alissonotum impressicolle Arrow抗药性监测结果。根据对广东顺德逢简、广东红旗农场、广西崇左3地虫源Rf虫群、Rh虫群和Rc虫群三龄幼虫的监测结果与敏感基线对比,在1991年,Rf虫群对辛硫磷、久效磷、克百威、氰戊菊酯和林丹分别产生了3.3、2.0、3.3、14.8和5.0倍的抗药性,Rh虫群对甲基异柳磷、氰戊菊酯和林丹分别产生了3.0、8.9和2.4倍的抗药性。在1996年,Rh虫群对辛硫磷、甲基异柳磷、甲拌磷和克百威的抗性分别为2.0、6.0、3.8和11.5倍。与1991年监测结果相比,Rh虫群对甲基异柳磷、克百威、辛硫磷和甲拌磷的抗性分别上升了3.0、9.6、2.0和2.7倍。在2009年,Rc虫群对辛硫磷、毒死蜱、特丁硫磷和克百威的抗性分别为2.2、6.5、119.1和6.4倍。在抗性治理研究方面,通过新农药化合物筛选和农药混配,筛选出10种生物活性优于对照药剂的新农药,特别是有5种新烟碱类药剂的生物活性高于对照药剂;农药混配研究中有15个混配组合的CTC150。文章还总结出一套快速、高效的甘蔗土栖害虫药剂筛选方法。作者认为,只有通过害虫抗性综合治理,减少农药用量和对化学防治的依赖,才能从根本上解决害虫抗药性问题。

Monitoring and Management of Insecticide Resistance inAlissonotum impressicolle Arrow

This paper reported monitoring results of insecticide resistance inAlissonotum impressicolle Arrow (a sugarcane underground pest). According to the comparison between 3 instar of Rf strain from Fengjian (Xunde county, Guangdong Province), Rh strain from Hongqi Farm (Zhanjiang, Guangdong Province) and Rc strain from Chongzuo (Guangxi Province) and sensitivity base-line, the resistance values of Rf strain in 1991 against phoxim, monocrotophos, carbofuran, fenvalerate, gamma-BHC were 3.3, 2.0, 3.3, 14.8, 5.0 respectively; that of the Rh strain against isofenphos-methyl, fenvalerate, gamma-BHC were 3.0, 8.9, 2.4 respectively. In 1996, the resistance values of Rh strain against phoxim, isofenphos-methyl, phorate, carbofuran were 2.0, 6.0, 3.8 and 11.5 respectively. By comparison to monitoring results of 1991, resistance values of Rh strain against isofenphos-methyl, carbofuran, phoxim, phorate rose 3.0, 9.6, 2.0 and 2.7, respectively. In 2009, the resistance values of Rc strain against phoxim, chlorpyrifos, terbufos and carbofuran were 2.2, 6.5, 119.1 and 6.4. In the aspect of management of insecticide resistance, we have found 10 new insecticides with better bioactivity than that of the control, bioactivity of 5 neonicotionoids were particularly good. In the research of pesticide mixing, CTC of 15 mixtures were greater than 150. The author also presented a rapid, efficient screening method of insecticide on underground insect pests of sugarcane. It is suggested that, to resolve radically the problem of resistance to insecticide, the dosage and dependence of insecticide should be reduced, and comprehensive management of resistance to insecticide should be employed.