应用CPV林间防治越冬代马尾松毛虫试验

Tests on Applying CPV Controlling Dendrolimus punctatus Walker

应用CPV林间进行越冬代马尾松毛虫防治试验,结果表明不同剂量CPV与1/100000的20%氰戊菊酯乳油复配能显著提高CPV的林间杀虫效果.林间以CPV 2.4×106～1.5×105 多角体/ml与1/100000的20%氰戊菊酯乳油复配防治越冬代马尾松毛虫为宜,13天幼虫死亡率可达85%以上.

Tests were conducted on controlling overwintering generation larvae of Dendrolimus Punctatus Walker by using the mixtures of CPV adding 1/100,000 20%fenvalerate EC with the different density in forests in Dayu, jiangxi. The results showed that the control effects have been raised obviously by the mixtures, and the mortality of larvae were more than 85% after 13 days by applying the mixtures （CPV 2.4×10^6-1.5×10^5 CPB/ml ＋1/100,000 20% fenvalerate EC） to control Dendrolimus punctatus Walker in forests.