杨树生长的边行优势及其在胶合板材培育中的应用

方升佐;蔡顺章;于洪林

南京林业大学学报(自然科学版) ›› 1997, Vol. 21 ›› Issue (02) : 13-17.

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南京林业大学学报(自然科学版) ›› 1997, Vol. 21 ›› Issue (02) : 13-17. DOI: 10.3969/j.jssn.1000-2006.1997.02.003
研究论文

杨树生长的边行优势及其在胶合板材培育中的应用

  • 方升佐;蔡顺章;于洪林
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THE EDGE GROWTH EFFECT OF POPLAR AND ITS APPLICATION ON SILVICULTURAL PRACTICE  OF PLYWOOD PLANTATIONS

  • Fang Shengzuo(Nanjing Forestry University Nanjing 210037)Cai Shunzhang Yu Honglin
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摘要

<正>通过调查研究不同密度,不同林龄I-69杨林分中边行木及林木在胸径、冠幅、树高及材积生长进程的差异,探讨了林木生长的边行优势在杨树胶合板材定向培育中的应用。结果表明,胸径、冠幅及材积的边行生长优势随林分密度的增大而增大,但边行木与林木在树高生长上差异不显著;边行所处的方位不同,其边行生长优势也存在差异。4个不同方位中,以东方位的边行生长优势最大,西方位次之,北方位最小;不同密度的林分,边行生长优势出现的时间不同,密度越大,出现的时间越早。400株/hm2的I-69杨林分,7~8年间表现出边行生长优势。笔者根据林分边行生长优势原理,提出了杨树胶合板材人工林的适宜造林密度,合理的种植点配置方式和优化的杨粮间作模式,为平原农区发展杨树胶合板材人工林基地提供了依据。

Abstract

Based on the investigation of 35 plantations of clone I69, the difference between edge tree and standing tree in DBH, tree crown, tree height and volume was compared. The results indicated that the edge growth effect in DBH, tree crown and volume rised with the increasing of stand density, but the difference in tree height between edge tree and standing tree was slight. There existed a great difference in edge growth effects for various orientations which the edge row located. In four orientations (East, South, West and North), E orientation had the highest edge growth effects, W orientation was the second and N orientation was the lowest. The time which edge growth effects occured was different from various stand density plantations, the higher the stand density was, the earlier the edge growth effect happened. For the stand which stand density was 400 stems/hm2, the edge growth effect appeared about 7~8 years. On the basis of tree edge growth effects, the suitable planting density, reasonable spacing of planting spots and optimum patterns were suggested for poplar plywood plantations.

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方升佐;蔡顺章;于洪林. 杨树生长的边行优势及其在胶合板材培育中的应用[J]. 南京林业大学学报(自然科学版). 1997, 21(02): 13-17 https://doi.org/10.3969/j.jssn.1000-2006.1997.02.003
Fang Shengzuo(Nanjing Forestry University Nanjing 210037)Cai Shunzhang Yu Honglin. THE EDGE GROWTH EFFECT OF POPLAR AND ITS APPLICATION ON SILVICULTURAL PRACTICE  OF PLYWOOD PLANTATIONS[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 1997, 21(02): 13-17 https://doi.org/10.3969/j.jssn.1000-2006.1997.02.003

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