| 修枝对滇南大花序桉人工林生长的影响 |
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| 引用本文： | 李光友,徐建民,范春节,罗亚春,张云东,刘继伟,柏俊,钟正波,谭礼文,梁保智.修枝对滇南大花序桉人工林生长的影响[J].西北林学院学报,2023,38(2):147-152. |
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| 作者姓名： | 李光友 徐建民 范春节 罗亚春 张云东 刘继伟 柏俊 钟正波 谭礼文 梁保智 |
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| 作者单位： | (1.中国林业科学研究院 热带林业研究所国家重点实验室，中国林业科学研究院 热带林业研究所，广东 广州 510520；2.普洱市卫国林业局，云南 宁洱 665100) |
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| 基金项目： | “十三五”国家重点研发计划课题(2016YFD0600503)； |
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| 摘 要： | 以云南卫国林业局小黑江大花序桉实生林为研究对象，以不修枝作为对照，分别采用修掉1/3树高以下分枝、1/2树高以下分枝及修掉主干径粗5 cm以下分枝的方式进行修枝试验，分别在第2.5年和4.5年开展生长性状数据调查，通过对其蓄积生长和效益分析比较，评价不同修枝处理间的差异，并选择出效益最优的修枝方式。结果表明，不同修枝处理对林分生长和效益有显著的影响。2.5年生时，大强度修掉1/2高度以下分枝可以使每公顷木材蓄积达到最高，表明修枝能快速促进林木生长，而4.5年生时修枝与不修枝生长差异不显著，以不修枝木材蓄积最高；经济效益分析表明，在4.5年时，修掉1/3树度以下分枝时每公顷蓄积利润率达到1.77,比不修枝提高了4.12%,修枝促进了木材质量和价格明显提升，而该修枝处理可使每公顷木材净收入达45 497.72元，经济效益最好，是值得推广种植的定向培育模式。研究结果为大花序桉大径级培育和经济效益提升提供技术和理论依据。
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| 关 键 词： | 修枝 大花序桉 云南南部 单位面积蓄积量 效益分析 |
Effects of Pruning on the Growth of Eucalyptus cloeziana Plantation in Southern Yunnan |
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| LI Guang-you,XU Jian-min,FAN Chun-jie,LUO Ya-chun,ZHANG Yun-dong,LIU Ji-wei,BAI Jun,ZHONG Zheng-bo,TAN Li-wen,LIANG Bao-zhi. Effects of Pruning on the Growth of Eucalyptus cloeziana Plantation in Southern Yunnan[J].Journal of Northwest Forestry University,2023,38(2):147-152. |
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| Authors: | LI Guang-you XU Jian-min FAN Chun-jie LUO Ya-chun ZHANG Yun-dong LIU Ji-wei BAI Jun ZHONG Zheng-bo TAN Li-wen LIANG Bao-zhi |
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| Institution: | (1.Key Laboratory of State Forestry Administration on Tropical Forestry Research,Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,Guangdong,China; 2.Weiguo Forestry Bureau of Pu’er City,Ning’er 665100,Yunnan,China) |
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| Abstract: | Taking the Eucalyptus cloeziana plantation in Weiguo Forestry Bureau of Southern Yunnan as research object,the influence of pruning treatment on the growth was studied.No pruning was used as the control,and the branches below 1/3 and 1/2 of the tree height,the branches below 5 cm diameter of main trunk were pruned.Diameter at breast height (DBH) and tree height were investigated in 2.5 and 4.5 years after pruning,the stand volume,volume per hectare and benefits were calculated,respectively.The results showed that there were significant differences among pruning treatments on the growth and benefit of stand.The 1/2 tree height of pruning treatment with higher intensity could achieve the level of the highest volume per hectare in 2.5 years,indicating that pruning could promote the growth traits very fast in a short time.On the contrary,the treatment without pruning showed the best volume per hectare in 4.5 years.For economic benefit assessment,the profit rate of the 1/3 tree height pruning reached 1.77,6.12% higher than that of no pruning in 4.5 years,and its net income per hectare could reach 45 497.72 yuan and was the highest than others treatments’ for higher wood quality and price after pruning.Therefore,the 1/3 tree height pruning treatment is the most economical,and it is worth promoting as the directed cultivation mode of planting.This study provides a technical and theoretical basis for Eucalyptus cloeziana cultivation with large-size timber production and improvement of economic benefits. |
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| Keywords: | pruning Eucalyptus cloeziana Eucalyptus cloeziana southern Yunnan volume per hectare benefit assessment |
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