论文部分内容阅读
1983年测定了江苏东台棉铃虫对药剂的敏感性,并以此虫群作为我国监测棉铃虫对4种拟菊醋类农药抗性的敏感种。随后,对江苏、山东、河南、河北、安徽及新疆6省区19个点的棉铃虫抗药性监测表明:1985～1987年各监测点的棉铃虫对溴氰菊醋和氰戊菊醋均为敏感(抗性倍数为0.2～2.8倍);1988年发现河南新乡(4.0～4.4倍)和山东德州棉铃虫(3.5倍)对溴氰菊酯的敏感性降低;1989年发现河南黄泛区农场棉铃虫对溴氰菊酯和氰戊菊酯为低水平抗性(7.0和4.8～7.0倍),山东陵县棉铃虫为中等～低水平抗性(11.1倍和7.7倍);山东聊城棉铃虫已暴发中等抗性(23.0倍和20～33.3倍)。诊断剂量(敏感种的LD_(99))监测法表明。抗性个体存活率随抗性水平的提高而增加。在具中等水平抗性的聊城地区,棉铃虫群体中敏感个体约占1/3,因此,如继续大量使用拟菊酯类农药,抗性还将会进一步急剧上升。
In 1983, the sensitivity of Helicoverpa armigera to insecticides in Jiangsu Dongtai was determined and used as a sensitive species to monitor the resistance of four cotton bollworms to Helicoverpa armigera in China. Subsequently, the resistance surveillance of 19 cotton bollworms in Jiangsu, Shandong, Henan, Hebei, Anhui and Xinjiang provinces showed that both cotton bollworm and deltamethrin at each monitoring point from 1985 to 1987 were Sensitive (resistance multiples of 0.2 to 2.8 times); in 1988 found Henan Xinxiang (4.0 to 4.4 times) and Shandong Dezhou bollworm (3.5 times) sensitivity to deltamethrin decreased; found in 1989 in the Yellow River Panxian Henan farms Helicoverpa armigera had low level of resistance to deltamethrin and fenvalerate (7.0 and 4.8-7.0 times), and moderate to low level of resistance to H. armigera (11.1- and 7.7-fold) in Shandong province. Helicoverpa armigera Moderate resistance has been reported (23.0 and 20-33.3 fold). Diagnostic dose (sensitive species LD_ (99)) monitoring method. The survival rate of resistant individuals increased with the level of resistance. In Liaocheng area with medium level of resistance, the susceptible individuals in the population of cotton bollworm accounted for about one third of the population. Therefore, the resistance will further increase sharply if it continues to be used in large quantities.