绿得宝林间防治马尾松毛虫的药效试验

The Experiment of Using Bacillus thruringlensis Controlling Dendrolimus punctatus in Forests

摘要: 林间喷洒不同浓度的绿得宝防治马尾松毛虫幼虫的结果显示:1 000,1 500,2 000,2 500倍液防治效果均达到80.6%以上,其中1 500倍液防效达96.5%,可适用于大面积生产性防治。

Abstract: Some different consistencies of spraying Bacillus thruringlensis were tested in forests to control larvae of Dendrolimus punctatus.The rusult of the experiment showed that the consistence effects of 1 000,1 500,2 000,2 500 times all exceeded 80.6 percent.Among them,the effect of 1 500 times consistency was 96.5 Percent,being suitabl for controlling large areas for forestry production.