[1]方升佐,徐锡增,严相进,等.修枝强度和季节对杨树人工林生长的影响[J].南京林业大学学报(自然科学版),2000,24(06):006-10.[doi:10.3969/j.jssn.1000-2006.2000.06.002]
 FANG Sheng zuo,XU Xi zeng,YAN Xiang jin,et al.Effects of Pruning Intensities and Pruning Seasons on the Growth Dynamics of the Poplar Plantation[J].Journal of Nanjing Forestry University(Natural Science Edition),2000,24(06):006-10.[doi:10.3969/j.jssn.1000-2006.2000.06.002]
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修枝强度和季节对杨树人工林生长的影响
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
24
期数:
2000年06期
页码:
006-10
栏目:
研究论文
出版日期:
1900-01-01

文章信息/Info

Title:
Effects of Pruning Intensities and Pruning Seasons on the Growth Dynamics of the Poplar Plantation
文章编号:
1000-2006(2000)06-0006-05
作者:
方升佐;徐锡增;严相进;邓建国
南京林业大学;江苏南京210037;南京林业大学;江苏南京210037;江苏泗阳县多管局;江苏泗阳223700;江苏省泗阳农场;江苏泗阳223700
Author(s):
FANG Sheng zuo 1XU Xi zeng 1YAN Xiang jin 2DENG Jian guo 3
1.Nanjing Forestry University, Nanjing 210037, China;2.The Multi management Bureau of Siyang Jiangsu Province,Siyang 223700,China;3.The Farm of Siyang Jiangsu Province,Siyang 223700,China
关键词:
杨树人工林修枝强度修枝季节生长影响
Keywords:
Poplar plantation Pruning intensity Pruning season Growth dynamics
分类号:
S718
DOI:
10.3969/j.jssn.1000-2006.2000.06.002
文献标志码:
A
摘要:
<正>以江苏省泗阳农场 8hm2 的试验林为基础 ,评价了修枝强度和修枝季节对I - 69杨人工林生长及萌枝发生数量的影响。该试验采用裂区设计 ,主处理为修枝强度 ,分为 3种水平(1 /3H、1 /2H和CK) ;副处理为修枝季节 ,分 2个水平 (生长季和非生长季 )。研究结果表明 ,修枝处理后当年 ,不同修枝强度的林分叶面积指数存在显著差异 ,中度修枝 (1 /2H)林分的叶面积指数仅为对照处理的 49% ,弱度修枝林分叶面积指数为对照的 84% ;不同修枝季节对杨树人工林的生长影响不显著 ,但对萌枝发生数量影响显著 ,非生长季修枝林分的萌枝发生数量比生长季修枝林分高出 79.8% ;与对照相比 ,修枝处理 4a后 ,其平均胸径和平均单株材积 ,都略有下降 ,但均未达差异显著水平 ;而不同修枝强度的林分枝下高存在显著差异 ,中度修枝林分枝下高可达 6m ,弱度修枝的林分为 4.5m左右 ,而对照处理仅为 2 .0m。
Abstract:
The effects of pruning intensities and pruning seasons on the growth dynamics and the number of epicormic branches produced for a clone I-69 plantation were evaluated at Siyang Farm, Siyang County, P.R.China. Experimental treatments applied in a split plot design included: three pruning intensities (1/3 H , 1/2 H and CK), and two pruning seasons (growing season and non-growing season). Results indicated that difference in leaf area index (LAI) between the pruning intensities was manifested in the year after pruning. The LAIs of middle pruning intensity (1/2 H ) and slight pruning intensity (1/3 H ) were only 49% and 84% of the CK (unpruned trees) respectively. There was no significant difference in DBH and single-tree volume between two pruning seasons and three pruning intensities at 4 years after pruning. However, the number of epicormic branches was affected considerably by the pruning seacons. The number of epicormic branches in the stands pruned in non-growing season was 79.8% higher than that in growing season. The tree height of non-adhering knot was significantly affected by the pruning intensities at 4 years after pruning, 6.0m for the stand with middle pruning intensity, about 4.5?m for the slight pruning intensity and only 2.0?m for the unpruned stand.

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更新日期/Last Update: 1900-01-01