尽管舞毒蛾是北方区阔叶林重要的大害虫之一,但对其幼虫数量估计的抽样技术的研究进展仍然很慢。本项研究的目的在于利用头壳收集法对舞毒蛾幼虫各阶段的虫口密度进行准确估计。 Paramonov认为头壳收集法可对危害高层树冠的鳞翅目幼虫的虫口密度进行较准确地估计。如果把某一地区幼虫脱皮时落 Although Gypsy moth is one of the major pests of broad-leaved forests in Northern China, the research on sampling techniques for estimating the larval population is still slow. The purpose of this study is to accurately estimate the population density of larvae of gypsy moths using the head-shell collection method. Paramonov believes that the head-shell collection method provides a more accurate estimate of the population density of lepidopteran larvae that endanger the tall canopy. If the larvae in a particular area when peeling