摘要
用白僵菌、苏云金杆菌、2 4 .5 %全力、2 0 %氰戊菊酯等 4种杀虫剂的不同浓度对柳杉毛虫 (Dendrolimushoui L ajonquiere)进行室内毒力测定和林间防治试验 ,结果表明 ,野外防治柳杉毛虫以氰戊菊酯 6 0 0 0倍液 +苏云金杆菌 1.4× 10 9n/ ml+全力 80 0 0倍液 +白僵菌 1.2× 10 8n/ ml林间喷雾效果最佳 ,杀虫效果达 90 %以上。应用该复合剂大面积防治 2 0 hm2 ,效果达 80 %以上。
Different pesticides such as Beauveria bassiana,Bacillus thuringiensis, 24.5% Trainleader and 20% Femalerate with different density are chosen to determinate toxicity and control on Dendrolimus houi Lajonquiere in forest. The results showed that the spraying is the best with the combination of Femalerate 6000×, 1.4×10 9n/ml of Bacillus thuringiensis, Trainleader 8000× and 1.2×10 8n/ml of Beauveria bassiana, which killed D.houi Lajonquiere with effect of more than 90%. Application of the compound insecticide in 20 hm 2 of forests got the good result of more than 80% mortality of D.houi Lajonquiere.
出处
《华东昆虫学报》
2003年第1期71-76,共6页
Entomological Journal of East China
关键词
柳杉毛虫
防治试验
毒力测定
林间防治
Dendrolimus houi Lajonquiere, toxicity test, control in forest