| 修枝对福建柏林分生长及无节材形成的影响 |
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| 引用本文： | 肖祥希. 修枝对福建柏林分生长及无节材形成的影响[J]. 林业科学研究, 2005, 18(1): 22-26 |
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| 作者姓名： | 肖祥希 |
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| 作者单位： | 1.福建省林业科学研究院,福建福州 350012 |
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| 基金项目： | 国家"十五"攻关子专题2002BA515B0104(1),福建省科技厅重点科研课题99 Z 112共同资助 |
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| 摘 要： | 1998—2002年在福建省南靖国有林场对6年生福建柏林分进行的修枝试验表明:修枝促进林分生长和干物质的积累,修枝4a后,树高生长增加10.5%～20.9%,胸径生长增加2.6%～8.1%,单株生物量增加14.9%～37.2%,单株材积增加18.2%～44.3%,材积生长率提高3.48%～7.32%,林分蓄积量增加6.84～16.68m3·hm-2,其中促进林分生长效果最好的处理是修枝强度为50%;修枝降低了福建柏林木的尖削度,与对照相比较H/D值增加了7.0%～14.1%;在一定修枝强度范围内,修枝促进福建柏圆满度的增加;6年生开始修枝对降低尖削度、提高材积增长速率、促进节疤愈合效果最好,其次是5年生,11年生为最差;6年生的福建柏林分,在修枝强度为50%的条件下,树高、胸径、单株生物量、单株材积、材积生长率等以1200株·hm-2保留密度为最好。修枝强度和修枝间隔期可通过侧枝相对生长量法确定。
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| 关 键 词： | 福建柏 修枝 生长 无节材 |
| 文章编号： | 1001-1498(2005)01-0022-05 |
| 收稿时间： | 2004-06-16 |
Effect of Stem Pruning on Growth and Knot Free Timber Production of Fokienia hodginsii Plantation |
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| XIAO Xiang-xi. Effect of Stem Pruning on Growth and Knot Free Timber Production of Fokienia hodginsii Plantation[J]. Forest Research, 2005, 18(1): 22-26 |
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| Authors: | XIAO Xiang-xi |
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| Affiliation: | 1. Fujian Academy of Forestry, Fuzhou350012, Fujian, China |
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| Abstract: | The pruning of 6 year-old Fokienia hodginsii plantation in Nanjing State-owned Forest Farm of Fujian were studied.The results showed that:Stem pruning accelerated the growth and biomass accumulation of Fokienia hodginsii plantation.4 years after stem pruning,the height,DBH,biomass and stem volume of single tree,growth rate of stem volume and stem volume accumulation increased by 10.5%～20.9%,2.6%～8.1%,14.9%～37.2%, 18.2%～44.3%, 18.74%～39.44% and 6.84～16.68 (m3·hm-2) respectively.The pruning intensity of 50% in all treatment had the best accelerating effect. Stem pruning reduced the acuminate intensity and increased the chubbiness intensity, the value of H/D increased by 7.0%～14.1% compared with CK;The pruning start age of 6 year-old was most effective in reducing acuminate intensity,increasing growth rate of stem volume and accelerating concrescence,the secondly effective treatment was 5 year-old,the worst was 11 year-old.In the condition of 6 year-old pruning start age and 50% pruning intensity,the holding density of 1 200 plant.hm-2 was most effective in increasing height,DBH, biomass and stem volume of single tree,and growth rate of stem volume. The pruning intensity and alternation time can be decided by relative growth curve of side branch. |
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| Keywords: | Fokienia hodginsii plantation stem pruning growth knot free timber |
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