落叶松毛虫(Dendrolimus supeiansButler)是落叶松的一大害虫,黑龙江省自50年代以来先后在小兴安岭林区及东、西部相继发生。目前该虫在大部分落叶松人工林内有不同程度的危害。近20年来各地对该虫的防治作了大量工作,并取得了一定的成绩,但对控制其危害尚有较大距离,且近几年来,在个别地区有危害加剧的趋势。更有 Dendrolimus supeians Butler is a large pest of larch. Heilongjiang province has successively occurred in the small Xinganling forest area and east and west successively since the 1950s. The insects present in most larch plantations have varying degrees of harm. In the recent 20 years, a great deal of work has been done on the prevention and control of this pest and some achievements have been made. However, there is still a long way to go to control its harm. In recent years, there has been a trend of aggravating the danger in some areas. More