【摘要】 在红塔山自然保护区的灵照山片区和徐家山片区的云南松林中设置调查样地29个,对切梢小蠹种群、生物学特性及危害特征进行调查研究。结果表明,红塔山自然保护区发生的切梢小蠹主要有云南切梢小蠹和横坑切梢小蠹2种,在种群数量分布上以横坑切梢小蠹占优势,平均占78.30%。2种切梢小蠹同时存在于同一林分中形成交叉危害,对枝梢危害长度和树干危害部位存在明显差异。建议在切梢小囊蛀梢期及转干繁殖前及时采取措施降低虫口密度。更多还原

【Abstract】 The 29 sample plots were set up in Pinus yunnanensis forests in Lingzhaoshan area and Xujiashan area of Hongtashan Nature Reserve to investigate the population, biological characteristics and hazard characteristics of Tomicus.The results showed that the species of Tomicus were Tomicus yunnanensis and Tomicus minor respectively.The T.minor was dominated in quantity, accounting for 78.30%.The two species of Tomicus occurred in the same stand at the same time and caused cross-harm which were significantly different to damage different length of shoots and different parts of trunks.This paper suggested to reduce the population density of Tomicus during the shoot-feeding stage and before propagation in trunk.更多还原