| 对球果损失造成油松良种减产的分析 |
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| 引用本文： | 郭俊荣,王亚峰.对球果损失造成油松良种减产的分析[J].陕西林业科技,1995(3):15-18. |
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| 作者姓名： | 郭俊荣 王亚峰 |
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| 作者单位： | 陕西省林业科学研究所 |
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| 摘 要： | 调查了油松种子园、母树林良种减产的原因，主要是由于球果在生长发育过程中的大量损失；而虫害、雌花授粉不良、因缺少水肥造成的落花落果是油松球果损失的主要原因。同时提出了减少球果损失的几点技术措施。
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| 关 键 词： | 油松 球果损失 种子产量 种子园 母树林 |
ANALYSIS OF OFF PRODUCTION CAUSED BY CONE LOSS FOR PINUS TABULAEFORMIS |
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| Guo Junrong,Wang Yafeng,Xie Bin,Yang Peihua.ANALYSIS OF OFF PRODUCTION CAUSED BY CONE LOSS FOR PINUS TABULAEFORMIS[J].Shaanxi Forest Science and Technology,1995(3):15-18. |
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| Authors: | Guo Junrong Wang Yafeng Xie Bin Yang Peihua |
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| Abstract: | The reason of off production for cone seeds in Pinus tabulaeformis seed orchard are mainly caused by the loss of cones in its development.Insects damage, deficiency of pollination and premafure drop of flowers and cones are the main reasons of cone loss.Some technique of reducing cone loss were proposed. |
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| Keywords: | Pinus tabulaeformis cone loss seed yield seed orchard |
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