大兴安岭林区白毛树皮象生物学特性初步研究

A PRELIMINARY STUDY ON THE BIONOMICS OF HYLOBIUS ALBOSPARSUS BOHEMAN IN THE DAXING'AN MOUNTAIN FOREST AREA

在大兴安岭塔河地区白毛树皮象2年一代,老熟幼虫及成虫分别在伐根及林内枯枝落叶层中越冬。成虫主要危害落叶松及樟子松的主梢及1～3年生侧枝,啃食其嫩梢、嫩叶、韧皮部及顶芽。研究表明,该虫的发生与采伐迹地的年限。伐根与林缘的距离,以及林分周围的环境等均有密切关系。

Hylobius albosparsus Boheman happens one generation in two years and overwinters as last instar lavae in stumps and adults under the litters. The adults mainly attack the main shoots, 1—3 year old side branches of Larch and Pine trees, damage its young shoots, leaves, phyloem and terminal buds. This study reveals that the occurrence of the pest is greatly affected by the time of logging, distance between stumps and forest edge and the environment surround the stand.