| 油松毛虫越冬幼虫上树下树历期的预测 |
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| 引用本文： | 夏乃斌,屠泉洪. 油松毛虫越冬幼虫上树下树历期的预测[J]. 北京林业大学学报, 1991, 0(2) |
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| 作者姓名： | 夏乃斌 屠泉洪 |
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| 作者单位： | 北京林业大学林业资源学院(夏乃斌)，北京林业大学基础部(屠泉洪) |
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| 摘 要： | 通过1984～1986年对越冬幼虫的系统调查数据,分别求得油松毛虫越冬幼虫上树历期约为51d;下树历期约为87d;上树高峰期为每年的3月28日～4月19日;下树高峰期为每年的10月份。并同时对越冬幼虫上树过程中的物候学进行了观察。
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| 关 键 词： | 松毛虫 越冬幼虫 上树历期 下树历期 上树高峰期 下树高峰期 物候学 |
Studies on Period Up Through the Tree and Down Through the Tree of Hibernating Larvae of Dendrolimus tabulaeformis Tsai et Liu |
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| Xia Naibin Tu Quanhong. Studies on Period Up Through the Tree and Down Through the Tree of Hibernating Larvae of Dendrolimus tabulaeformis Tsai et Liu[J]. Journal of Beijing Forestry University, 1991, 0(2) |
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| Authors: | Xia Naibin Tu Quanhong |
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| Abstract: | By systematic investigation from 1984 to 1986,we have obtained results in the following parameters: (1) the period up through the tree is about 51 days; (2) the period down through the tree is about 87 days; (3) the peak period up through the tree is from Mar. 28 to Apr. 19 in every year; (4) the peak period down through the tree is Oct. in every year.The results of the study have provided a reliable basis for forecasting the occurrence period and controlling the hibernating larval. |
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| Keywords: | Chinese pine caterpillar hibernating larval period up through the tree period down through the tree peak period up through the tree peak period down through the tree phenology |
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