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钩梢对麻竹叶片C、N、P化学计量特征的影响

童龙 张磊 李彬 耿养会 谢锦忠 张玮 陈丽洁

童龙, 张磊, 李彬, 耿养会, 谢锦忠, 张玮, 陈丽洁. 钩梢对麻竹叶片C、N、P化学计量特征的影响[J]. 北京林业大学学报, 2018, 40(11): 69-75. doi: 10.13332/j.1000--1522.20180216
引用本文: 童龙, 张磊, 李彬, 耿养会, 谢锦忠, 张玮, 陈丽洁. 钩梢对麻竹叶片C、N、P化学计量特征的影响[J]. 北京林业大学学报, 2018, 40(11): 69-75. doi: 10.13332/j.1000--1522.20180216
Tong Long, Zhang Lei, Li Bin, Geng Yanghui, Xie Jinzhong, Zhang Wei, Chen Lijie. Effects of different truncation treatments on the stoichiometry of C, N and P in leaves of Dendrocalamus latiflorus[J]. Journal of Beijing Forestry University, 2018, 40(11): 69-75. doi: 10.13332/j.1000--1522.20180216
Citation: Tong Long, Zhang Lei, Li Bin, Geng Yanghui, Xie Jinzhong, Zhang Wei, Chen Lijie. Effects of different truncation treatments on the stoichiometry of C, N and P in leaves of Dendrocalamus latiflorus[J]. Journal of Beijing Forestry University, 2018, 40(11): 69-75. doi: 10.13332/j.1000--1522.20180216

钩梢对麻竹叶片C、N、P化学计量特征的影响

doi: 10.13332/j.1000--1522.20180216
基金项目: 

“十三五”国家重大研发计划课题 2016YFD060090301

“十二五”农村领域国家科技计划课题 2015BAD04B01-5

详细信息
    作者简介:

    童龙, 工程师。主要研究方向:竹林培育。Email: tonglonglove@126.com 地址:400036重庆市沙坪坝区歌乐山高店子106号重庆市林业科学研究院

    责任作者:

    谢锦忠,研究员。主要研究方向:竹子栽培、森林生态。Email:jzhxie@163.net 地址:311400浙江省杭州市富阳区大桥路73号中国林业科学研究院亚热带林业研究所

  • 中图分类号: S718.43;S751+.5

Effects of different truncation treatments on the stoichiometry of C, N and P in leaves of Dendrocalamus latiflorus

  • 摘要: 目的麻竹钩梢是一种人为干扰的营林措施,通过钩梢处理能够消弱其立竹顶端优势,提高单株立竹商品竹叶的产量。本文目的为进一步丰富麻竹钩稍研究理论,为其生产经营提供相关的科学依据。方法以不钩梢麻竹为对照,对麻竹进行轻度、中度、重度钩梢处理,通过测定1~3年生麻竹叶片C、N、P含量,同时对其C/N、C/P和N/P的比值做相关性分析,初步探讨了麻竹叶片化学计量特征对不同钩稍强度的响应。结果结果表明:与不钩梢相比,3组钩稍处理下,1~3年生麻竹叶片的全C、N、P含量以及C/N、C/P、N/P比值差别较大。其中1和2年生麻竹叶片C含量在不同钩梢处理间均表现为中度钩梢﹥轻度钩梢﹥重度钩梢﹥不钩梢,最大值为最小值的1.24倍。中度钩梢处理下,1年生麻竹叶片C、N、P含量分别比对照高6.8%、11.5%、低1.5%;对于2年生麻竹而言,3组钩梢处理的C/P分别比对照高1.2%、6.8%和低5.0%。不钩梢麻竹叶片N/P值范围13.65~14.19,平均值为13.99,表明麻竹生长过程中主要受到N元素的限制。随着钩稍强度的增大,1~3年生麻竹叶片N含量显著增加,且与不钩梢处理达到显著差异。结论本试验表明:麻竹叶片C、N、P化学计量对钩梢处理有一定程度的适应,适度的钩稍有利于提高麻竹生产力,对其生长具有一定的促进作用。

     

  • 图  1  不同钩梢处理对麻竹叶片C/N的影响

    CK.不钩梢;T1.轻度钩梢;T2.中度钩梢;T3.重度钩梢。下同。

    Figure  1.  Effects of different truncation treatments on the C/N values of Dendrocalamus latiflorus

    CK, no truncation; T1, light truncation; T2, medium truncation; T3, heavy truncation. The same below.

    图  2  不同钩梢处理对麻竹叶片C/P的影响

    Figure  2.  Effects of different truncation treatments on the C/P values of Dendrocalamus latiflorus

    图  3  不同钩梢处理对麻竹叶片N/P的影响

    Figure  3.  Effects of different truncation treatments on the N/P values of Dendrocalamus latiflorus

    表  1  不同年龄不同处理麻竹叶片全C、N、P含量

    Table  1.   Content of C, N and P in leaves of Dendrocalamus latiflorus with different treatments and varied ages

    g/kg
    处理
    Treatment
    C N P
    1 a 2 a 3 a 1 a 2 a 3 a 1 a 2 a 3 a
    不钩梢
    No truncation
    495.92±21.62Aa 480.72±32.01Aa 425.67±19.06Ab 31.04±0.99Da 30.62±0.83Ca 26.13±1.35Cb 1.99±0.01Ba 1.95±0.03Bb 1.90±0.04Bc
    轻度钩梢
    Light truncation
    512.62±18.62Aa 489.35±20.37Ab 439.75±43.16Ac 32.04±1.62Ca 31.23±1.02Ba 28.93±1.22Ba 1.90±0.02Da 1.87±0.04Cb 1.83±0.05Cc
    中度钩梢
    Medium truncation
    529.67±52.83Aa 497.63±36.49Ab 461.84±53.64Ab 34.61±1.24Ba 31.93±0.98Bb 29.12±0.82Bc 1.96±0.01Ca 1.92±0.02Cb 1.85±0.03Cc
    重度钩梢
    Heavy truncation
    501.23±20.34Aa 472.42±28.92Aa 412.39±31.85Ab 36.02±2.14Aa 33.25±1.01Ab 32.02±1.21Ab 2.18±0.08Aa 2.04±0.01Ab 1.96±0.02Ac
    注:不同大写字母表示同一竹龄不同钩梢处理间差异显著,不同小写字母表示同一钩梢处理不同竹龄间差异显著(P < 0.05),下同。Notes: in same bamboo age, different capital letters mean significant difference between varied truncation treatments at P < 0.05 level. In same truncation treatment, different small letters mean significant difference between varied bamboo age at P < 0.05 level. The same below.
    下载: 导出CSV

    表  2  麻竹叶片元素含量及化学计量比的相关关系(以2年生麻竹为例)

    Table  2.   Correlations between leaf element content and stoichiometric ratio of Dendrocalamus latiflorus (taking 2 years old Dendrocalamus latiflorus as an example)

    项目Item C N P C/N C/P N/P
    C 1
    N -0.274 1
    P -0.797 0.676 1
    C/N 0.991** -0.399 -0.851 1
    C/P 0.973* -0.295 -0.706 0.970* 1
    N/P 0.528 0.595 -0.188 0.419 0.409 1
    注:*表示在P<0.05水平上相关显著,**表示在P<0.01水平上相关极显著。* means significant correlation at P<0.05 level, ** means extremely significant correlation at P<0.01 level.
    下载: 导出CSV
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    [34] Elser J J, Bracken M E S, Cleland E E, et al. Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater, marine and terrestrial ecosystems[J]. Ecology Letters, 2007, 10(12): 1135-1142. doi: 10.1111/ele.2007.10.issue-12
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  • 收稿日期:  2018-07-12
  • 修回日期:  2018-09-03
  • 刊出日期:  2018-11-01

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