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不同轮耕模式对豫北农田土壤固碳及碳库管理指数的影响

朱长伟 陈琛 牛润芝 李洋 姜桂英 杨锦 申凤敏 刘芳 刘世亮

朱长伟, 陈琛, 牛润芝, 李洋, 姜桂英, 杨锦, 申凤敏, 刘芳, 刘世亮. 不同轮耕模式对豫北农田土壤固碳及碳库管理指数的影响[J]. 中国生态农业学报 (中英文), 2022, 30(4): 671−682 doi: 10.12357/cjea.20210741
引用本文: 朱长伟, 陈琛, 牛润芝, 李洋, 姜桂英, 杨锦, 申凤敏, 刘芳, 刘世亮. 不同轮耕模式对豫北农田土壤固碳及碳库管理指数的影响[J]. 中国生态农业学报 (中英文), 2022, 30(4): 671−682 doi: 10.12357/cjea.20210741
ZHU C W, CHEN C, NIU R Z, LI Y, JIANG G Y, YANG J, SHEN F M, LIU F, LIU S L. Effects of tillage rotation modes on soil carbon sequestration and carbon pool management index of farmland in northern Henan[J]. Chinese Journal of Eco-Agriculture, 2022, 30(4): 671−682 doi: 10.12357/cjea.20210741
Citation: ZHU C W, CHEN C, NIU R Z, LI Y, JIANG G Y, YANG J, SHEN F M, LIU F, LIU S L. Effects of tillage rotation modes on soil carbon sequestration and carbon pool management index of farmland in northern Henan[J]. Chinese Journal of Eco-Agriculture, 2022, 30(4): 671−682 doi: 10.12357/cjea.20210741

不同轮耕模式对豫北农田土壤固碳及碳库管理指数的影响

doi: 10.12357/cjea.20210741
基金项目: 国家重点研发计划重点专项项目(2021YFD1700900)、国家自然科学基金项目(41401327)、河南省重点研发与推广专项项目(192102110161)和河南省高等学校重点科研项目(20A210024)资助
详细信息
    作者简介:

    朱长伟, 主要研究方向为土壤培肥与调控。E-mail: 1937975636@qq.com

    通讯作者:

    姜桂英, 主要从事土壤培肥与调控方面的研究, E-mail: jgy9090@126.com

    刘世亮, 主要从事土壤培肥与调控方面的研究, E-mail: shlliu70@163.com

  • 中图分类号: S158.5

Effects of tillage rotation modes on soil carbon sequestration and carbon pool management index of farmland in northern Henan

Funds: This study was supported by the National Key Research and Development Project of China (2021YFD1700900), the National Natural Science Foundation of China (41401327), the Key R&D and Promotion Project of Henan Province (192102110161), and the Key Research Project of Henan Colleges and Universities (20A210024).
More Information
  • 摘要: 为探究不同轮耕模式对豫北农田土壤固碳及碳库管理指数的影响, 本研究在豫北潮土区, 于2016—2020年小麦季以3年为一个轮耕周期, 设置5个处理: 连续旋耕(RT-RT-RT)、深耕-旋耕-旋耕(DT-RT-RT)、深耕-旋耕-浅旋耕(DT-RT-SRT)、深耕-浅旋耕-浅旋耕(DT-SRT-SRT)、深耕-浅旋耕-旋耕(DT-SRT-RT)。测定并分析了2019年和2020年0~50 cm土层土壤容重、总有机碳(SOC)、易氧化有机碳(LOC)、稳态有机碳(NLOC)含量及有机碳储量和碳库管理指数。结果表明, 各轮耕处理均能降低0~40 cm土层的土壤容重。在0~20 cm土层, DT-SRT-SRT处理的SOC、LOC和NLOC含量最高, 分别为11.54 g∙kg−1、3.31 g∙kg−1和8.30 g∙kg−1; 而相较于RT-RT-RT处理, DT-SRT-RT处理显著增加10~40 cm土层SOC、LOC和NLOC含量; 且各轮耕处理降低了LOC/SOC, 但提高了NLOC/SOC, 尤其是20~40 cm土层, 最高增长7.5%。试验期内, 各轮耕处理均能提高0~40 cm土层土壤有机碳储量, 2019年0~30 cm土层, DT-SRT-SRT处理有机碳储量最高, 为36.64 Mg∙hm−2; 但在2019和2020年, 0~40 cm土层, DT-SRT-RT处理的有机碳储量均为最高, 与RT-RT-RT处理相比分别提高12.8%和9.7%。随耕作年限的不同土壤碳库管理指数(CPMI)呈现出一定的差异, 2019年, DT-SRT-RT处理显著降低了0~40 cm土层中的活度指数, CPMI相对较低, 最高降幅为4.3%。而2020年, DT-SRT-RT处理显著提高了0~40 cm土层的碳库指数和CPMI, CPMI最高为108.5。综合以上分析, 深耕-条旋耕-旋耕处理显著降低了土壤容重, 提高SOC、LOC和NLOC, 增加0~40 cm土层有机碳储量, 具有明显的固碳效应。
  • 图  1  2019年和2020年不同轮耕处理下不同土层土壤容重

    RT-RT-RT: 连续旋耕; DT-RT-RT: 深耕-旋耕-旋耕; DT-RT-SRT: 深耕-旋耕-浅旋耕; DT-SRT-SRT: 深耕-浅旋耕-浅旋耕; DT-SRT-RT: 深耕-浅旋耕-旋耕。不同小写字母表示同一土层不同处理间差异显著(P<0.05)。

    Figure  1.  Soil bulk densities in different soil layers under different rotation tillage treatments in 2019 and 2020

    RT-RT-RT: continuous rotary tillage; DT-RT-RT: deep tillage-rotary tillage-rotary tillage; DT-RT-SRT: deep tillage-rotary tillage-shallow rotary tillage; DT-SRT-SRT: deep tillage-shallow rotary tillage-shallow rotary tillage; DT-SRT-RT: deep tillage-shallow rotary tillage-rotary tillage. Different small letters show significant differences among treatments (P<0.05).

    图  2  2019年和2020年不同轮耕处理下不同土层土壤总有机碳

    RT-RT-RT: 连续旋耕; DT-RT-RT: 深耕-旋耕-旋耕; DT-RT-SRT: 深耕-旋耕-浅旋耕; DT-SRT-SRT: 深耕-浅旋耕-浅旋耕; DT-SRT-RT: 深耕-浅旋耕-旋耕。不同小写字母表示同一土层不同处理间差异显著(P<0.05)。

    Figure  2.  Soil organic carbon contents in different soil layers under different rotation tillage treatments in 2019 and 2020

    RT-RT-RT: continuous rotary tillage; DT-RT-RT: deep tillage-rotary tillage-rotary tillage; DT-RT-SRT: deep tillage-rotary tillage-shallow rotary tillage; DT-SRT-SRT: deep tillage-shallow rotary tillage-shallow rotary tillage; DT-SRT-RT: deep tillage-shallow rotary tillage-rotary tillage. Different small letters show significant differences among treatments (P<0.05).

    图  3  2019年和2020年不同轮耕处理下不同土层土壤易氧化有机碳(a)及稳态有机碳(b)

    RT-RT-RT: 连续旋耕; DT-RT-RT: 深耕-旋耕-旋耕; DT-RT-SRT: 深耕-旋耕-浅旋耕; DT-SRT-SRT: 深耕-浅旋耕-浅旋耕; DT-SRT-RT: 深耕-浅旋耕-旋耕。不同小写字母表示同一土层不同处理间差异显著(P<0.05)。

    Figure  3.  Soil liable organic carbon (a) and non-liable organic carbon (b) contents in different soil layers under different rotation tillage treatments in 2019 and 2020

    RT-RT-RT: continuous rotary tillage; DT-RT-RT: deep tillage-rotary tillage-rotary tillage; DT-RT-SRT: deep tillage-rotary tillage-shallow rotary tillage; DT-SRT-SRT: deep tillage-shallow rotary tillage-shallow rotary tillage; DT-SRT-RT: deep tillage-shallow rotary tillage-rotary tillage. Different small letters show significant differences among treatments (P<0.05).

    图  4  2019年和2020年不同轮耕处理下易氧化有机碳(a)及稳态有机碳(b)占总有机碳的比例

    RT-RT-RT: 连续旋耕; DT-RT-RT: 深耕-旋耕-旋耕; DT-RT-SRT: 深耕-旋耕-浅旋耕; DT-SRT-SRT: 深耕-浅旋耕-浅旋耕; DT-SRT-RT: 深耕-浅旋耕-旋耕。不同小写字母表示同一土层不同处理间差异显著(P<0.05)。

    Figure  4.  Proportions of liable organic carbon (a) and non-liable organic carbon (b) to total organic carbon in different soil layers under different rotation tillage treatments in 2019 and 2020

    RT-RT-RT: continuous rotary tillage; DT-RT-RT: deep tillage-rotary tillage-rotary tillage; DT-RT-SRT: deep tillage-rotary tillage-shallow rotary tillage; DT-SRT-SRT: deep tillage-shallow rotary tillage-shallow rotary tillage; DT-SRT-RT: deep tillage-shallow rotary tillage-rotary tillage. Different small letters show significant differences among treatments (P<0.05).

    表  1  小麦轮耕时期、土层深度和耕作模式三因素下土壤容重、总有机碳、易氧化有机碳、稳态有机碳及其比例的方差分析

    Table  1.   Variance analysis of soil bulk densities and contents of organic carbon content, liable organic carbon and non-liable organic carbon and their proportions under three factors of wheat rotation period, soil depth and farming mode

    变异来源

    Source of variation
    df容重

    Bulk density
    总有机碳
    Soil organic carbon
    易氧化有机碳
    Liable organic carbon
    稳态有机碳
    Non-liable organic carbon
    易氧化有机碳/
    总有机碳

    Liable organic carbon /
    organic carbon
    稳态有机碳/总有机碳

    Non-liable organic carbon /
    organic carbon
    年份 Year (Y)126.25**7.99**253.45**2.9**13.03**13.03**
    土层深度 Soil depth (D)41075.98**2672.03**49 254.57**1334**90.57**90.57**
    耕作模式 Tillage mode (T)410.26**16.67**55.89**13.39**5.67**5.67**
    Y×D460.77**4.99**166.86**6.76**22.37**22.37**
    Y×T48.11**1.67NS9.81**1.67NS1.53NS1.53NS
    D×T163.45**4.64**9.91**4.26**3.6**3.6**
    Y×D×T162.83**1.29**3.15**1.25NS0.94NS0.94NS
    误差均方
    Error mean squares
    10000.1100.102.692.69
       **: P<0.01; *: P<0.05; NS: P>0.05.
    下载: 导出CSV

    表  2  不同耕作措施下不同土层等质量土壤有机碳储量

    Table  2.   Soil organic carbon stock on equivalent soil mass basis of different soil layers under different tillage treatments

    年份

    Year
    取样深度

    Soil depth (cm)
    土壤有机碳储量
    Soil organic carbon storage (Mg∙hm−2)
    RT-RT-RTDT-RT-RTDT-RT-SRTDT-SRT-SRTDT-SRT-RT
    20190~1014.59±0.41c15.32±0.32b15.39±0.29b16.21±0.16a15.35±0.29b
    0~2024.61±1.12c26.80±1.27ab26.10±0.32bc28.62±1.22a27.00±0.47ab
    0~3032.49±0.80c35.76±0.55ab34.50±0.35b36.64±0.52a36.39±0.83a
    0~4038.71±0.94c42.87±0.81ab41.85±0.57b43.52±0.25a43.67±0.88a
    20200~1014.14±0.21bc14.06±0.22bc13.85±0.32c14.79±0.27a14.50±0.37ab
    0~2024.82±0.44b24.93±0.63b24.86±0.16b26.11±0.29a26.15±0.38a
    0~3033.54±0.45d34.17±0.52cd34.80±0.29bc35.43±0.36ab36.32±0.63a
    0~4039.79±0.65b40.49±0.70b42.53±0.28a42.60±0.50a43.65±0.91a
      RT-RT-RT: 连续旋耕; DT-RT-RT: 深耕-旋耕-旋耕; DT-RT-SRT: 深耕-旋耕-浅旋耕; DT-SRT-SRT: 深耕-浅旋耕-浅旋耕; DT-SRT-RT: 深耕-浅旋耕-旋耕。同行不同小写字母表示同一土层不同处理间差异显著(P<0.05)。RT-RT-RT: continuous rotary tillage; DT-RT-RT: deep tillage-rotary tillage-rotary tillage; DT-RT-SRT: deep tillage-rotary tillage-shallow rotary tillage; DT-SRT-SRT: deep tillage-shallow rotary tillage-shallow rotary tillage; DT-SRT-RT: deep tillage-shallow rotary tillage-rotary tillage. Different lowercase letters in the same line show significant differences among treatments (P<0.05).
    下载: 导出CSV

    表  3  不同耕作措施下不同土层的土壤碳库管理指数

    Table  3.   Soil carbon pool management indexes (CPMI) of different soil layers under different tillage treatments

    年份
    Year
    土层深度
    Soil depth (cm)
    处理
    Treatment
    碳库活度
    Carbon pool activity (A)
    活度指数
    Activity index (AI)
    碳库指数
    Carbon pool index (CPI)
    碳库管理指数
    Carbon pool management index (CPMI)
    2019 0~10 RT-RT-RT 0.45a 1.00a 1.00c 100.00a
    DT-RT-RT 0.43ab 0.97ab 1.03bc 100.08a
    DT-RT-SRT 0.43ab 0.97ab 1.04bc 101.09a
    DT-SRT-SRT 0.40b 0.91b 1.10a 99.96a
    DT-SRT-RT 0.43ab 0.97ab 1.05b 101.44a
    10~20 RT-RT-RT 0.52a 1.00a 1.00b 100.00b
    DT-RT-RT 0.44a 0.86a 1.15ab 96.58c
    DT-RT-SRT 0.51a 0.98a 1.06ab 102.91a
    DT-SRT-SRT 0.42a 0.80a 1.23a 97.80bc
    DT-SRT-RT 0.43a 0.83a 1.18ab 96.49c
    20~30 RT-RT-RT 0.47a 1.00a 1.00c 100.00a
    DT-RT-RT 0.42ab 0.90ab 1.14ab 101.62a
    DT-RT-SRT 0.45ab 0.96ab 1.06bc 101.32a
    DT-SRT-SRT 0.47a 1.00a 1.01bc 100.80a
    DT-SRT-RT 0.38b 0.81b 1.21a 97.73b
    30~40 RT-RT-RT 0.47a 1.00a 1.00b 100.00a
    DT-RT-RT 0.40b 0.86b 1.16a 98.91ab
    DT-RT-SRT 0.38b 0.81b 1.19a 95.56c
    DT-SRT-SRT 0.41b 0.87b 1.11ab 96.69bc
    DT-SRT-RT 0.37b 0.79b 1.23a 95.88c
    40~50 RT-RT-RT 0.27a 1.00a 1.00a 100.00bc
    DT-RT-RT 0.28a 1.06a 0.97a 97.44c
    DT-RT-SRT 0.31a 1.15a 0.90a 101.60ab
    DT-SRT-SRT 0.25a 0.95a 1.07a 98.27c
    DT-SRT-RT 0.31a 1.17a 0.91a 103.36a
    2020 0~10 RT-RT-RT 0.39a 1.00a 1.00b 100.00c
    DT-RT-RT 0.39a 1.00a 1.01ab 100.99c
    DT-RT-SRT 0.41a 1.05a 0.99b 103.94b
    DT-SRT-SRT 0.39a 1.00a 1.06a 105.55b
    DT-SRT-RT 0.41a 1.05a 1.03ab 108.50a
    10~20 RT-RT-RT 0.51a 1.00a 1.00b 100.00b
    DT-RT-RT 0.50ab 0.97ab 1.04ab 100.07b
    DT-RT-SRT 0.50ab 0.98ab 1.04ab 101.51ab
    DT-SRT-SRT 0.50ab 0.97ab 1.07a 103.47a
    DT-SRT-RT 0.47b 0.91b 1.10a 99.96b
    20~30 RT-RT-RT 0.43a 1.00a 1.00c 100.00c
    DT-RT-RT 0.39b 0.92b 1.12ab 102.65b
    DT-RT-SRT 0.39b 0.91b 1.17a 105.56a
    DT-SRT-SRT 0.40ab 0.94ab 1.09b 101.41b
    DT-SRT-RT 0.37b 0.86b 1.19a 102.20b
    30~40 RT-RT-RT 0.50a 1.00a 1.00c 100.00c
    DT-RT-RT 0.49a 0.99a 1.05c 102.99b
    DT-RT-SRT 0.39b 0.78b 1.30a 102.04b
    DT-SRT-SRT 0.42b 0.85b 1.18b 100.33c
    DT-SRT-RT 0.44ab 0.88ab 1.22ab 107.28a
    40~50 RT-RT-RT 0.36a 1.00a 1.00a 100.00b
    DT-RT-RT 0.36a 1.01a 1.04a 103.18ab
    DT-RT-SRT 0.38a 1.08a 0.99a 106.51a
    DT-SRT-SRT 0.37a 1.04a 1.00a 103.10ab
    DT-SRT-RT 0.38a 1.07a 0.99a 105.09a
      RT-RT-RT: 连续旋耕; DT-RT-RT: 深耕-旋耕-旋耕; DT-RT-SRT: 深耕-旋耕-浅旋耕; DT-SRT-SRT: 深耕-浅旋耕-浅旋耕; DT-SRT-RT: 深耕-浅旋耕-旋耕。同列同一年份同一土层不同小写字母表示不同处理间差异显著(P<0.05)。RT-RT-RT: continuous rotary tillage; DT-RT-RT: deep tillage-rotary tillage-rotary tillage; DT-RT-SRT: deep tillage-rotary tillage-shallow rotary tillage; DT-SRT-SRT: deep tillage-shallow rotary tillage-shallow rotary tillage; DT-SRT-RT: deep tillage-shallow rotary tillage-rotary tillage. Different lowercase letters in the same column for the same year and same soil layer show significant differences among treatments (P<0.05).
    下载: 导出CSV
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  • 收稿日期:  2021-11-10
  • 录用日期:  2022-02-17
  • 网络出版日期:  2022-02-17
  • 刊出日期:  2022-04-11

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