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自１９９１年起结合松毛虫ＤｅｎｄｒｏｒｏｌｉｍｕｓｓｐｅｃｔａｂｉｒｌｉｓＢｕｔｌｅｒ防治工作，在青岛市崂山区对天敌种群与松毛虫自然消长关系进行了调查，并对天敌做出了初步评价。
Since 1991, combined with Dendrorolimupectpectabirlis Butler prevention and control of pine caterpillars, the relationship between natural enemies population and the natural growth and decline of pine caterpillars in Laoshan District of Qingdao City was investigated and preliminary assessment of natural enemies was made.