| 杨树溃疡病引致幼树的生长量损失估测* |
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| 引用本文： | 曾大鹏,戴玉成,刘春静,张淑娟.杨树溃疡病引致幼树的生长量损失估测*[J].林业科学研究,1990,3(4):330-334. |
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| 作者姓名： | 曾大鹏 戴玉成 刘春静 张淑娟 |
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| 作者单位： | [1]中国林业科学研究院林业研究所 [2]辽宁省铁岭市林业科学研究所 |
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| 基金项目： | 国家“七·五”科技攻关专题，辽宁行铁岭市科委“杨树溃疡病治防技术研究”课题 |
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| 摘 要： | 杨树溃疡病经常在幼树干部形成大溃疡斑，造成枝枯和死树。以胸径下病斑面积与树周面积的比值计算的发病程度（X5）与胸径年生长量（Y2）之间呈显著相关。通过回归建立了三个品种不同病情下的生长量模型：美×559：Y2＝0．15406＋118．52194／（102．9113＋X^25)加杨：Y2＝－0．4136＋278．32113／（133．0115＋X^25)小×黑：Y2＝－0．08487＋110．16972／（131．4548＋X^25)三个估算模型经数学检验合理；坐标曲线符合植物病理学原理，可作为该病病情分级和生长量损失估算的参考。
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| 关 键 词： | 杨树 溃疡病 生长量损失 数学模型 估测模型 损失阈值 发病程度 |
| 收稿时间： | 1990/1/24 0:00:00 |
THE STUDY ON GROWING LOSS ASSESSMENT OF YOUNG POPLAR CAUSED BY DOTHIORELLA GREGARIA |
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| Zeng Dapeng,Dai Yucheng,Liu Chunjing and Zhang Shujuan.THE STUDY ON GROWING LOSS ASSESSMENT OF YOUNG POPLAR CAUSED BY DOTHIORELLA GREGARIA[J].Forest Research,1990,3(4):330-334. |
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| Authors: | Zeng Dapeng Dai Yucheng Liu Chunjing and Zhang Shujuan |
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| Institution: | Zeng Dapeng Dai Yucheng(The Research Institute of Forestry CAF)Liu Chunjing(Forest Research Institute of Tie Ling City)Zhang Shujuan(The Research Institute of Fcrcst Resource Information Technique CAF) |
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| Abstract: | According to the investigation of single tree, the study on assessment of growing loss of young poplars caused by Dothiorella gregaria was carried out. The proportion of area (X5) between disease spots and bark of tree under breast diameter was independent variable; the growth data of breast diameter (Y2) in a year were dependent variable. (X6) and (Y2) of the three species were studied by regression analysis.1.P. pyramidalis×559:Y2=-0.15406+118.52194/(102.9113+X52)2.P. canadensis: Y2=-0.4136+278.32113/(133.0115+X52)3.P. simonii×nigra: Y2=-0.08487+110.16972/(131.4548+X52)It is believed that the three holistic models are useful in grading and loss assessment of the disease. |
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| Keywords: | Dothiorella gregaria growing loss mathematical model |
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