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落叶松八齿小蠹是落叶松人工林中次期性干部害虫的主要种类,对健康木、衰弱木均有危害。近年来,在黑龙江省林区已造成较大危害。对该虫的防治主要采取营林防治措施,即在被害率较低时采取伐除被害木的卫生伐手段,在被害率大时采取皆伐、更新造林手段。对落叶松八齿小蠹的营林防治,一般因危害程度不同采取不同防治手段(防治指标)。但该虫营林防治指标不同于初期性害虫的防治指标,确定防治指标的经济阈值又受多种
Larix olgensis is the main type of secondary caducity pests in larch plantations, which is harmful to healthy wood and weak wood. In recent years, the forest in Heilongjiang Province has caused greater harm. The prevention and control of this pest mainly adopts the measures of silviculture prevention and control, that is, when the rate of victimization is relatively low, the means of sanitation cutting out the harmed wood is adopted, and when the victimization rate is high, clear cutting and reforestation means are adopted. Of Larix octopus Beetle camp forest prevention and control, generally due to the different degree of harm to take different control measures (control indicators). However, the insect pest management indicators are different from the initial pest prevention and control indicators to determine the economic indicators of prevention and control indicators by a variety of