油松毛虫越冬状况及其对冬防效果的影响
FOREST PEST AND DISEASE（2000）
Abstract
赤峰地区油松毛虫Dendrolimus tabulaeformis Tsai et Liu在树干垂直方向上虫口分布百分率呈递减趋势,树干不同部位越冬松毛虫死亡率无显著差异,山坡不同坡向之间,山坡与平地之间树干上越冬松毛虫死亡率也无显著差异,树干上越冬的松毛虫仅占越冬总虫口的3.7%,且保持了98%的高死亡率,不足以对冬季防治松毛虫构成影响.
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