[1]吴剑,周晴,宋连君,等. 造林密度对三倍体白杨杂种无性系胸径和树皮厚度的影响[J].西北林学院学报,2020,35(2):79-86.[doi:10.3969/j.issn.1001-7461.2020.02.11]
 WU Jian,ZHOU Qing,SONG Lian-jun,et al. Effects of Spacing on the Diameter at Breast Height and Bark Thickness of Triploid Hybrid Clones in White Poplar[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2020,35(2):79-86.[doi:10.3969/j.issn.1001-7461.2020.02.11]
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 造林密度对三倍体白杨杂种无性系胸径和树皮厚度的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第35卷
期数:
2020年第2期
页码:
79-86
栏目:
出版日期:
2020-03-31

文章信息/Info

Title:
 Effects of Spacing on the Diameter at Breast Height and Bark Thickness of Triploid Hybrid Clones in White Poplar
文章编号:
1001-7461(2020)02-0079-08
作者:
 吴剑1周晴1宋连君2康向阳1张平冬1*
 (1.北京林业大学 林木育种国家工程实验室,林木花卉遗传育种教育部重点实验室,北京 100083;2.河北省威县苗圃,河北 邢台 054700)
Author(s):
 WU Jian1ZHOU Qing1SONG Lian-jun2KANG Xiang-yang1ZHANG Ping-dong1*
 (1.National Engineering Laboratory for Tree Breeding,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education,Beijing Forestry University,Beijing 100083,China; 2.Nursery of Wei County,Xingtai 054700,Hebei,China)
关键词:
 造林密度三倍体白杨杂种胸径树皮厚度
Keywords:
 spacing hybrid clone of white poplar diameter at breast height bark thickness
分类号:
S792.11
DOI:
10.3969/j.issn.1001-7461.2020.02.11
文献标志码:
A
摘要:
 三倍体杨树具有突出的营养生长优势,研究造林密度对三倍体毛白杨杂种无性系径向生长的影响规律,可为三倍体毛白杨工业用材林营建和经营管理提供理论指导。以定植于河北威县的11年生三倍体白杨杂种无性系(B301、B331和S86)以及二倍体毛白杨对照无性系1316密度试验林为研究对象,研究造林密度(2 490、1 665、1 110、825、615、495株/hm2和405株/hm2)对三倍体白杨杂种无性系胸径和树皮厚度的影响。结果表明,造林密度和无性系以及造林密度与无性系间的交互效应均对三倍体白杨杂种无性系的胸径生长具有极显著的影响,以495株/hm2造林密度条件下三倍体白杨杂种无性系S86的胸径生长量最大,平均胸径达25.1 cm;三倍体白杨杂种无性系B301、S86的胸径生长量显著大于无性系B331和二倍体对照毛白杨无性系1316;无性系对11年生三倍体白杨杂种无性系的树皮厚度具有极显著的影响,造林密度对11年生三倍体白杨杂种无性系的树皮厚度具有显著的影响。三倍体白杨杂种无性系B301、B331、S86以及二倍体对照毛白杨无性系1316内部个体间胸径与树皮厚度均呈现正相关,说明树皮厚度随着胸径生长量的增大而增厚。研究结果对于认识造林密度对杨树径向生长的影响和指导三倍体白杨良种无性系的推广具有重要意义。
Abstract:
 Triploid Populus has been proved to have outstanding advantages in vegetative growth over diploids.The study on the effect of spacing on radial growth in triploid hybrid clones of Poulus tomentosa will provide theoretical guidance for the construction and management of triploid Populus plantations.In the present study,effects of spacing (2 490,1 665,1 110,825,615,495 ,and 405 trees/hm2) on diameter at breast height (DBH) and bark thickness (BT) were examined by taking 11-year-old triploid hybrid clones (B301,B331 and S86) as research objects and diploid clone 1316 of P.tomentosa as the control in Wei Country,Hebei Province.The results indicated that spacing and clone and spacing×clone interaction had highly significant influences on DBH.The largest growth in DBH (25.1 cm) of triploid hybrid clone S86 planted with 495 trees/hm2 was observed.The growth in DBH of triploid hybrid clones B301 and S86 was much higher than that of triploid hybrid clone B331 and diploid clone 1316 (control) of P.tomentosa.Clonal effect had highly significant effects on BT.Spacing had significant effects on BT.However,positive correlations between DBH and BT in triploid hybrid clones B301,B331,S86 and diploid clone 1316 were observed,suggesting that BT increased as the growth of DBH increased.Our findings will help to understand the effects of spacing on the radial growth and generalize the improved triploid clones of P.tomentosa.

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备注/Memo

备注/Memo:
 收稿日期:2019-05-10修回日期:2019-07-03
基金项目:“十三五”白杨工业资源材高效培育技术研究(2016YFD0600403)。
作者简介:吴剑,男,硕士在读,研究方向:林木细胞遗传与细胞工程。E-mail:1269485709@qq.com
*通信作者:张平冬,男,博士,副教授,研究方向:林木遗传改良。E-mail:zhangpd@bjfu.edu.cn
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