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生物质炭基尿素和普通尿素对毛竹林土壤氧化亚氮通量的影响

曹善郅 周家树 张少博 姚易寒 刘娟 李永夫

曹善郅, 周家树, 张少博, 姚易寒, 刘娟, 李永夫. 生物质炭基尿素和普通尿素对毛竹林土壤氧化亚氮通量的影响[J]. 浙江农林大学学报. doi: 10.11833/j.issn.2095-0756.20220254
引用本文: 曹善郅, 周家树, 张少博, 姚易寒, 刘娟, 李永夫. 生物质炭基尿素和普通尿素对毛竹林土壤氧化亚氮通量的影响[J]. 浙江农林大学学报. doi: 10.11833/j.issn.2095-0756.20220254
CAO Shanzhi, ZHOU Jiashu, ZHANG Shaobo, YAO Yihan, LIU Juan, LI Yongfu. Effects of biochar-based urea and common urea on soil N2O flux in Phyllostachys edulis forest soil[J]. Journal of Zhejiang A&F University. doi: 10.11833/j.issn.2095-0756.20220254
Citation: CAO Shanzhi, ZHOU Jiashu, ZHANG Shaobo, YAO Yihan, LIU Juan, LI Yongfu. Effects of biochar-based urea and common urea on soil N2O flux in Phyllostachys edulis forest soil[J]. Journal of Zhejiang A&F University. doi: 10.11833/j.issn.2095-0756.20220254

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生物质炭基尿素和普通尿素对毛竹林土壤氧化亚氮通量的影响

doi: 10.11833/j.issn.2095-0756.20220254
基金项目: 国家自然科学基金资助项目(31870576)
详细信息
    作者简介: 曹善郅 (ORCID: 0000-0002-6526-6964),从事生物质炭影响土壤氮素转化的研究。E-mail: shanzhicaozafu@163.com
    通信作者: 李永夫 (ORCID: 0000-0002-8324-5606),教授,博士,从事森林土壤碳氮循环研究。E-mail: yongfuli@zafu.edu.cn
  • 中图分类号: S714

Effects of biochar-based urea and common urea on soil N2O flux in Phyllostachys edulis forest soil

  • 摘要:   目的  探索生物质炭基尿素和普通尿素的施用对毛竹Phyllostachys edulis林土壤氧化亚氮(N2O)通量与环境因子的影响效应与作用机制,为研发减缓土壤N2O排放的施肥技术提供科学依据。  方法  2018年9月至2019年9月,在杭州市临安区青山镇亚热带典型毛竹林样地布置野外控制试验。试验设5个处理:对照(不施肥)、低水平尿素(100 kg·hm−2)、高水平尿素(300 kg·hm−2)、低水平炭基尿素(100 kg·hm−2)和高水平炭基尿素(300 kg·hm−2)。采用静态箱—气相色谱法测定毛竹林土壤N2O排放速率,分析在上述施肥处理下土壤N2O通量、温度、含水量、氮素形态及相关酶活性的动态变化规律。  结果  低水平尿素和高水平尿素处理使毛竹林土壤N2O的年累积排放通量增加了17.3%和36.0%,而低水平炭基尿素和高水平炭基尿素处理分别使其降低了3.1%和16.9%。尿素和炭基尿素处理均显著提高土壤铵态氮(NH4 +-N)和硝态氮(NO3 -N)质量分数(P<0.05);尿素处理显著增加了土壤水溶性有机氮质量分数以及脲酶和蛋白酶活性,而炭基尿素处理显著降低了上述3个指标(P<0.05)。另外,在上述5个处理下,毛竹林土壤N2O排放速率与土壤温度、NH4 +-N、水溶性有机氮、脲酶活性和蛋白酶活性均存在显著相关性(P<0.05)。  结论  与尿素相比,炭基尿素对毛竹林土壤N2O具有显著的减排效应,主要机制是其降低了土壤水溶性有机氮质量分数和氮循环相关酶活性。图5表3参55
  • 图  1  炭基尿素和尿素对毛竹林土壤N2O通量的影响

    Figure  1  Effects of biochar-based urea and common urea on soil N2O fluxes in a Ph. edulis forest

    图  2  炭基尿素和尿素对毛竹林土壤N2O年累积排放量的影响

    Figure  2  Biochar-based urea and common urea effects on annual cumulative soil N2O effluxes in a Ph. edulis forest

    图  3  炭基尿素和普通尿素对毛竹林土壤温度和含水量的影响

    Figure  3  Biochar-based urea and common urea effects on soil temperature and moisture content in a Ph. edulis forest

    图  4  炭基尿素和尿素对毛竹林土壤不同形态氮组分的影响

    Figure  4  Biochar-based urea and common urea effects on different soil N fractions in a Ph. edulis forest

    图  5  炭基尿素和尿素对毛竹林土壤脲酶和蛋白酶活性的影响

    Figure  5  Biochar-based urea and common urea effects on activities of urease and protease in a Ph. edulis forest soil

    表  1  不同施肥处理对9个响应变量影响的重复测量方差分析

    Table  1.   Repeated measures ANOVA for the effects of different fertilization treatments on nine response variables

    土壤温度土壤含水量NH4 +-NNO3 -NWSONMBN脲酶蛋白酶N2O
    处理nsns******ns******
    处理后时间******************
    处理×处理后时间*****************
      说明:ns表示影响不显著; *表示影响显著(P<0.05); **表示影响极显著(P<0.01)
    下载: 导出CSV

    表  2  炭基尿素和尿素对毛竹林土壤环境因子年均值的影响

    Table  2.   Biochar-based urea and common urea effects on annual mean value of soil environmental factors in a Ph. edulis forest

    处理NH4 +-N/
    (mg·kg−1)
    NO3 -N/
    (mg·kg−1)
    WSON/
    (mg·kg−1)
    MBN/
    (mg·kg−1)
    脲酶/
    (μmol·g−1·h−1)
    蛋白酶/
    (μmol·g−1·h−1)
    ck 6.96 d 2.44 e 15.5 b 42.3 ab 1.15 b 0.88 c
    LU 9.52 b 3.34 b 16.1 b 43.1 a 1.28 a 0.97 b
    HU 11.84 a 3.60 a 16.9 a 43.3 a 1.33 a 1.03 a
    LBU 8.72 c 2.85 d 14.5 c 41.1 b 1.11 b 0.86 d
    HBU 9.14 bc 3.02 c 13.5 d 42.4 ab 1.00 c 0.77 e
      说明:不同小写字母表示处理间差异显著(P<0.05)
    下载: 导出CSV

    表  3  毛竹林土壤N2O通量与土壤因子的相关性

    Table  3.   Relationships between soil N2O efflux and environmental factors in Ph. edulis forest

    土壤因子各处理土壤N2O与土壤因子的相关性
    ckLUHULBUHBU
    R2PR2PR2PR2PR2P
    土壤温度 0.75 <0.01 0.68 0.01 0.77 <0.01 0.78 <0.01 0.62 <0.01
    土壤含水量 0.18 >0.05 0.13 >0.05 0.16 >0.05 0.24 >0.05 0.20 >0.05
    土壤NH4 +-N 0.73 <0.01 0.32 <0.05 0.30 <0.05 0.51 <0.01 0.46 <0.01
    土壤NO3 -N 0.47 <0.01 0.23 >0.05 0.31 <0.05 0.51 <0.01 0.52 <0.01
    土壤WSON 0.46 <0.01 0.71 <0.01 0.68 <0.01 0.59 <0.01 0.48 <0.01
    土壤MBN 0.51 <0.01 0.23 >0.05 0.35 <0.05 0.66 <0.01 0.76 <0.01
    土壤脲酶 0.77 <0.01 0.52 <0.01 0.69 <0.01 0.90 <0.01 0.89 <0.01
    土壤蛋白酶 0.78 <0.01 0.50 <0.01 0.62 <0.01 0.82 <0.01 0.75 <0.01
    下载: 导出CSV
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  • 收稿日期:  2022-03-28
  • 录用日期:  2022-08-06
  • 修回日期:  2022-08-06

生物质炭基尿素和普通尿素对毛竹林土壤氧化亚氮通量的影响

doi: 10.11833/j.issn.2095-0756.20220254
    基金项目:  国家自然科学基金资助项目(31870576)
    作者简介:

    曹善郅 (ORCID: 0000-0002-6526-6964),从事生物质炭影响土壤氮素转化的研究。E-mail: shanzhicaozafu@163.com

    通信作者: 李永夫 (ORCID: 0000-0002-8324-5606),教授,博士,从事森林土壤碳氮循环研究。E-mail: yongfuli@zafu.edu.cn
  • 中图分类号: S714

摘要:   目的  探索生物质炭基尿素和普通尿素的施用对毛竹Phyllostachys edulis林土壤氧化亚氮(N2O)通量与环境因子的影响效应与作用机制,为研发减缓土壤N2O排放的施肥技术提供科学依据。  方法  2018年9月至2019年9月,在杭州市临安区青山镇亚热带典型毛竹林样地布置野外控制试验。试验设5个处理:对照(不施肥)、低水平尿素(100 kg·hm−2)、高水平尿素(300 kg·hm−2)、低水平炭基尿素(100 kg·hm−2)和高水平炭基尿素(300 kg·hm−2)。采用静态箱—气相色谱法测定毛竹林土壤N2O排放速率,分析在上述施肥处理下土壤N2O通量、温度、含水量、氮素形态及相关酶活性的动态变化规律。  结果  低水平尿素和高水平尿素处理使毛竹林土壤N2O的年累积排放通量增加了17.3%和36.0%,而低水平炭基尿素和高水平炭基尿素处理分别使其降低了3.1%和16.9%。尿素和炭基尿素处理均显著提高土壤铵态氮(NH4 +-N)和硝态氮(NO3 -N)质量分数(P<0.05);尿素处理显著增加了土壤水溶性有机氮质量分数以及脲酶和蛋白酶活性,而炭基尿素处理显著降低了上述3个指标(P<0.05)。另外,在上述5个处理下,毛竹林土壤N2O排放速率与土壤温度、NH4 +-N、水溶性有机氮、脲酶活性和蛋白酶活性均存在显著相关性(P<0.05)。  结论  与尿素相比,炭基尿素对毛竹林土壤N2O具有显著的减排效应,主要机制是其降低了土壤水溶性有机氮质量分数和氮循环相关酶活性。图5表3参55

English Abstract

曹善郅, 周家树, 张少博, 姚易寒, 刘娟, 李永夫. 生物质炭基尿素和普通尿素对毛竹林土壤氧化亚氮通量的影响[J]. 浙江农林大学学报. doi: 10.11833/j.issn.2095-0756.20220254
引用本文: 曹善郅, 周家树, 张少博, 姚易寒, 刘娟, 李永夫. 生物质炭基尿素和普通尿素对毛竹林土壤氧化亚氮通量的影响[J]. 浙江农林大学学报. doi: 10.11833/j.issn.2095-0756.20220254
CAO Shanzhi, ZHOU Jiashu, ZHANG Shaobo, YAO Yihan, LIU Juan, LI Yongfu. Effects of biochar-based urea and common urea on soil N2O flux in Phyllostachys edulis forest soil[J]. Journal of Zhejiang A&F University. doi: 10.11833/j.issn.2095-0756.20220254
Citation: CAO Shanzhi, ZHOU Jiashu, ZHANG Shaobo, YAO Yihan, LIU Juan, LI Yongfu. Effects of biochar-based urea and common urea on soil N2O flux in Phyllostachys edulis forest soil[J]. Journal of Zhejiang A&F University. doi: 10.11833/j.issn.2095-0756.20220254

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