摘要
以安徽太湖县敏感地区二化螟 (ChilosuppressalisWalker)自然种群为敏感种群 ,根据用药水平差异 ,有代表性地选用浙江、江苏和安徽 3地区田间种群 ,监测了二化螟对杀虫单等 4种杀虫剂的抗性水平。结果表明 :(1)浙江慈溪二化螟 3龄幼虫对杀虫单已产生高水平抗性 (RR =5 4 6 ) ,对杀螟松产生了中等水平抗性 (RR =13 9) ,对敌敌畏和氰戊菊酯仍较敏感 ;(2 )安徽安庆二化螟 3龄幼虫对杀虫单处于中抗水平 (RR =10 8) ,对杀螟松、敌敌畏和氰戊菊酯仍较敏感 ;(3)江苏兴化二化螟 3龄幼虫与安庆相似 ,对杀虫单中抗 (RR =12 6 ) ,对其它被试药剂仍较敏感 ;(4 )不同地区用3龄和 6龄幼虫测定的抗药性水平相近。同时用太湖敏感种群和慈溪高抗种群进行的增效试验表明 ,TPP对杀虫单无增效作用 ,但PBO在抗性种群中对杀虫单有一定的增效作用 。
Bioassay was taken to determine the susceptibility of the rice stem borer,Chilo suppressalis Walker,collected from Taihu County,Anhui Province.After compared with the reported data,the results were taken as relatively susceptible base line data.Field strains of rice stem borer from Zhejiang,Anhui and Jiangsu Provinces were collected and monitored for resistance.Results showed that:(1)In Cixi County,Zhejiang Province,high level resistance was developed to monosultap(RR=54 6),median level to fenitrothion(RR=13 9),but susceptibility still remained to DDVP and fenvalerate.(2)In Anqing County,Anhui Province,only median level resistance was found to monosultap(RR=10 8).No resistance was found to fenitrothion,DDVP and fenvalerate.(3)In Xinghua County,Jiangsu Province,similar as in Anqing County,median level resistance was developed to monosultap(RR=12 6).No resistance was found to other tested insecticides.(4)Bioassay with 6th instar or 3rd instar larvae gave similar results as expressed in resistance level.Furthermore,synergistic test with PBO and TPP,inhibitor of MFO and esterase,respectively,revealed that TPP had no synergism to monosultap in both susceptible and resistant populations,but PBO shown a little synergism in the resistant population,indicating MFO may be involved in the resistance mechanism.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
2001年第1期43-46,共4页
Journal of Nanjing Agricultural University
基金
江苏省九五重点攻关课题 !(BE96 370 )
国家九五攻关项目! (L96 0 1)
