| 杜仲优树选择方法与标准的初步研究 |
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| 引用本文： | 李火根,王章荣.杜仲优树选择方法与标准的初步研究[J].经济林研究,1994,12(1):22-27. |
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| 作者姓名： | 李火根 王章荣 |
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| 作者单位： | 南京林业大学，内蒙古 |
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| 摘 要： | 对３５年生杜仲人工林用优势木对比法进行选优试验，提出了杜仲优树选择标准：绝对生长量标准为胸径０．６—０．８ｃｍ／年，树高０．３—０．４ｍ／年；相对生长量标准为树高不低于优势木平均值，胸径的优良度达１５％以上。
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| 关 键 词： | 杜仲 优树选择 方法 标准 |
SELECTION METNODS AND CRITERIA FORPLUS TREES 0F EUCOMMIALI |
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| HUOGENG,WANG
ZHANG RONG,and SHEN XIUWENNanjing Forestry University,Nanjing,Jiangsu.SELECTION METNODS AND CRITERIA FORPLUS TREES 0F EUCOMMIALI[J].Economic Forest Researches,1994,12(1):22-27. |
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| Authors: | HUOGENG WANG
ZHANG RONG and SHEN XIUWENNanjing Forestry University Nanjing Jiangsu |
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| Institution: | HUOGENG,WANG
ZHANG RONG,and SHEN XIUWENNanjing Forestry University,Nanjing,Jiangsu 210037 |
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| Abstract: | Based on their investigation in four 35-year-old eucommiastands, the authors argue that the five
check tree system is applicableto the selection of plus trees of that plant. They have also formed
thecriteria for plus tree selection, According to them, the criteria ofabsolute growth is 0.6 0.8 cm/yr
for d.b.h.and 0.3 0.4m/yr for heightrespectively; the criteria of relative growth is no less than the
meanincrement of dominant trees for height and more than 15 percent of domin-ance ford.b.h.
respectively. |
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| Keywords: | Eucommia ulmoides Plus tree selection Criteria |
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