摘要
[目的]探讨选择性农药是否是稻纵卷叶螟再猖獗的诱导因素。[方法]在盆栽和田间试验中,以武运粳7号为供试水稻品种,分别采用不同浓度的25%扑虱灵和10%吡虫啉对稻纵卷叶螟2龄和4龄期的幼虫进行喷雾处理,研究这2种选择性农药对稻纵卷叶螟产卵的影响。[结果]在稻纵卷叶螟幼虫2龄期用扑虱灵300.0、112.5、60.0 g/hm2进行喷雾处理能刺激稻纵卷叶螟成虫产卵;在稻纵卷叶螟幼虫4龄期用吡虫啉60.0 g/hm2喷雾处理也能刺激稻纵卷叶螟成虫产卵,并且其成虫产卵量与对照相比显著增加。[结论]扑虱灵和吡虫啉能刺激稻纵卷叶螟成虫产卵,是稻纵卷叶螟再猖獗的诱导因素之一。
[ Objective] The aim was to disscuss whether the selective pesticide was the inducing factor for resurgence of Cnaphaloerocis medinails. [ Method] With Wuyunjing 7 as the tested rice variety, the influence of the two selective pesticides on the oviposition of C. medinalis was studied by spraying against the 2nd and 5th instar larvae of C. medinalis resp. with 25% Buprofezin and 10% Imidaeloprid at different concentrations in pot experiment and field experiment. [ Result] Spraying against the 2nd instar larvae of C. medinalis with Buprefezin at 300. 0, 112.5, 60.0 g/hm^2 and spraying against the 5^th instar larvae of C. medinalis with Imidacloprid at 60.0 g/hm^2 all could stimulate the C. medinalis adults to oviposit, and the fecundity of adults was increased significantly compared with the control. [ Conclusion ] Buprefezin and Imidacloprid could stimulate the C. rnedinalis adults to oviposit, which was one of the inducing factors for C. medinalis resurgence.
出处
《安徽农业科学》
CAS
北大核心
2008年第26期11437-11438,共2页
Journal of Anhui Agricultural Sciences
关键词
水稻
扑虱灵
吡虫啉
稻纵卷叶螟
产卵
Rice
Buprofeizin
Imidaeloprid
Cnaphaloerocis medlnalis
Oviposition
