The important role of rosin, oil of turpentine, tannin, activated carbon of forest chemical industry in national economy are point out. 林化产业在我国民经济中居于重要地位,在国际市场上也占有相当份额。
1% camphor and 1% oil of turpentine were the most effective ones among those repellent compounds, the repellence rates of which were 83.33% and 66.7% respectively. 用6种外源挥发性物质对落叶松毛虫进行林间驱避试验,其中以1%樟脑和1%松节油效果最佳,驱避率达到83.33%和66.67%。