水稻二化螟对氯虫苯甲酰胺和毒死蜱抗药性监测_毕业论文

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水稻二化螟对氯虫苯甲酰胺和毒死蜱抗药性监测

摘要:二化螟[Chilo suppressalis(walker)]属鳞翅目螟蛾科[Lepidoptera :Pyralidae],广泛分布于我国水稻种植区,危害水稻形成枯鞘、枯心、白穗、枯孕穗和虫伤株等症状。长期以来 ,二化螟的防治主要靠化学农药,由于不合理用药,有关二化螟对药剂产生抗药性的报道相继出现,一些药剂对二化螟的田间防治效果也明显下降。为明确二化螟对当前常用药剂的抗药性水平,本研究监测了二化螟田间种群对毒死蜱和氯虫苯甲酰胺两种药剂的抗药性,结果显示对毒死蜱的抗性最高的是浙江XS16种群,抗性倍数为35倍;对氯虫苯甲酰胺的抗性最高的种群集中在浙江省,浙江CN16、YY16、XS16种群的抗性最高,其中抗性最高的苍南种群达到74倍。本研究对及时了解这两种药剂的抗性发展和制定合理的抗性治理对策具有重要的意义。35414
毕业论文关键词:二化螟;毒死蜱;氯虫苯甲酰胺;抗药性
Resistance Monitoring of Rice Stem Borer ( Chilo suppressalis Walker) to chlorpyrifos and chlorantraniliprole
Abstract:The rice stem borer,Chilo suppressalis(Walker)(Lepidoptera: Pyralidae) is an important pest in the rice fields around the world. It can damage the rice, which causes the symptoms such as dead sheath, dead heart, white paddy, withered pregnant ear and so on. For a long time, chemical control kept to be a major strategy for controlling the rice stem borer. As the result of over applying the chemicals, insecticide resistance of C. suppressalis has been an important problem. In this study, we detected the resistance of field populations from 7 province to two chlorpyrifos and chlorantraniliprole. The results showed that the highest resistance to chlorpyrifos was Zhejiang XS16 population (RR=35 folds), the highest resistance to chlorantraniliprole  was found in Zhejiang province, CN16, YY16, XS16 populations were the most resistant, the highest resistance showed in Cangnan population reaching 74 times. This study is great significance to demonstrate the resistance of chlorpyrifos and chlorantraniliprole and helpful to design the strategy on resistance management.
Key words: Chilo suppressalis;chlorpyrifos;chlorantraniliprole;resistance
目录
水稻二化螟对毒死蜱和氯虫苯甲酰胺的抗药性监测    1
摘要    1
关键词    1
Abstract    1
Key words    2
1.材料与方法    2
1.1 供试昆虫    2
1.2 供试药剂    4
1.3 生物测定方法    4
1.3.1 水稻二化螟对毒死蜱的抗药性监测的生物测定方法    4
1.3.2 水稻二化螟对氯虫苯甲酰胺的抗药性监测的生物测定方法    4
1.4 统计分析    5
2 结果与分析    5
2.1 二化螟田间种群对毒死蜱的抗药性监测    5
2.2 二化螟田间种群对氯虫苯甲酰胺的抗药性监测    7
3. 讨论    8
参考文献:    10
致谢    11
水稻二化螟对毒死蜱和氯虫苯甲酰胺的抗药性监测
引言
二化螟是我国水稻上的重要害虫,除主要危害水稻外,还危害很多禾本科,在水稻上长形成枯稍、枯心、枯孕穗和虫伤株等受害症状,还可转株为害,严重影响水稻产量(罗南清,2006;吕锐玲,2011)。二化螟分布范围很广,我国主要稻区均有发生,尤其是长江流域发生频率颇高;国外遍及亚洲、大洋洲、北非及南欧的许多国家(盛承发等,2003)。我国稻螟灾害最早的记录始于乾隆元年,此后螟灾记录渐多。20世纪90年代以来螟灾达到历史最高水平,此后连年爆发成灾(盛承发等,2003)。 (责任编辑:qin)