摘要
对江西高安等 16个县、市林区的马尾松毛虫用溴氰菊酯、氰戊菊酯和氯氰菊酯用点滴法进行毒力测定 ,结果表明 ,江西林区马尾松毛虫对溴氰菊酯的耐药力有明显提高 ,其中高安、贵溪林区马尾松毛虫的抗性指数达到了低抗水平。马尾松毛虫对氰戊菊酯和氯氰菊酯尚未产生抗性。室内用以上 3种拟除虫菊酯与增效磷 (SV1)按 1∶ 0 .5、1∶ 1、1∶ 3、1∶ 5和 1∶ 10的比例混配 ,用点滴法对马尾松毛虫进行毒力测定 ,结果表明 ,增效磷与拟除虫菊酯混配有明显的增效作用 ,并且随着 SV1比例的提高 ,增效作用增强。用 4种拟除虫菊酯杀虫剂 (2 .5%溴氰菊酯、2 0 %氰戊菊酯、2 .5%三氟氯氰菊酯和 10 %氯氰菊酯 )加增效磷按不同混配比进行林间防治马尾松毛虫试验 ,结果表明 ,增效磷与拟除虫菊酯杀虫剂混配有极显著的增效作用。林间防治松毛虫以溴氰菊酯 +SV1(1∶ 5)、氰戊菊酯 +SV1(1∶ 3～ 1∶ 5)、三氟氯氰菊酯 +SV1(1∶ 3～ 1∶ 5)以及氯氰菊酯 +SV1(1∶ 5)稀释 80 0 0倍效果最佳。
Fourth instar populations of Dendrolimus punctatus collected from 16 counties in Jiangxi Province were evaluated to study the susceptibility to deltamethrin, fenvalerate and cypermethrin. The results showed that the resistance of D. punctatus populations in Gao an and Guixi to deltamethrin was not very high. The resistance of all other populations tested to deltamethrin increased obviously. No resistance to fenvalerate or cypermethrin was observed. Binary mixture of 5 different ratios (0.5∶1,1∶1,3∶1,5∶1 and 10∶1) of SV 1 with deltamethrin or fenvalerate or cypermethrin was applied. Synergism was observed at any ratio of SV 1 plus the three pyrethroids. The higher the concentration of SV 1, the stronger the synergistic effect. Combinations of four pyrethroid insecticides plus SV 1 were tested in pine forest. The results showed that the combination of 2.5% deltamethrin plus SV 1 (1∶5), combination of 20% fenvalerate plus SV 1 (1∶3～1∶5), combination of 2.5% cyhalothrin plus SV 1 (1∶3～1∶5) and combination of 10% cypermethrin plus SV 1 (1∶5) got significant synergistic effects and could effectively bring the D. punctatus under control.
出处
《林业科学研究》
CSCD
北大核心
2001年第2期141-147,共7页
Forest Research
基金
江西省科委重点项目
