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不同还田方式对玉米秸秆腐解及土壤养分含量的影响

田平 姜英 孙悦 马梓淇 隋鹏祥 梅楠 齐华

田平, 姜英, 孙悦, 马梓淇, 隋鹏祥, 梅楠, 齐华. 不同还田方式对玉米秸秆腐解及土壤养分含量的影响[J]. 中国生态农业学报(中英文), 2019, 27(1): 100-108. doi: 10.13930/j.cnki.cjea.180551
引用本文: 田平, 姜英, 孙悦, 马梓淇, 隋鹏祥, 梅楠, 齐华. 不同还田方式对玉米秸秆腐解及土壤养分含量的影响[J]. 中国生态农业学报(中英文), 2019, 27(1): 100-108. doi: 10.13930/j.cnki.cjea.180551
TIAN Ping, JIANG Ying, SUN Yue, MA Ziqi, SUI Pengxiang, MEI Nan, QI Hua. Effect of straw return methods on maize straw decomposition and soil nutrients contents[J]. Chinese Journal of Eco-Agriculture, 2019, 27(1): 100-108. doi: 10.13930/j.cnki.cjea.180551
Citation: TIAN Ping, JIANG Ying, SUN Yue, MA Ziqi, SUI Pengxiang, MEI Nan, QI Hua. Effect of straw return methods on maize straw decomposition and soil nutrients contents[J]. Chinese Journal of Eco-Agriculture, 2019, 27(1): 100-108. doi: 10.13930/j.cnki.cjea.180551

不同还田方式对玉米秸秆腐解及土壤养分含量的影响

doi: 10.13930/j.cnki.cjea.180551
基金项目: 

公益性行业(农业)科研专项经费项目 201503116

国家重点研发计划项目 2016YFD0300103

国家重点研发计划项目 2016YFD0300801

详细信息
    作者简介:

    田平, 研究方向为耕作制度原理与技术。E-mail:tianping23@163.com

    通讯作者:

    齐华, 主要研究方向为耕作制度原理与技术。E-mail:qihua10@163.com

  • 中图分类号: S341.9

Effect of straw return methods on maize straw decomposition and soil nutrients contents

Funds: 

the Special Fund for Agro-scientific Research in the Public Interest of China 201503116

the National Key Research and Development Project of China 2016YFD0300103

the National Key Research and Development Project of China 2016YFD0300801

More Information
  • 摘要: 通过土壤耕作和秸秆还田试验,以玉米秸秆为研究对象,探讨东北棕壤土区适宜的秸秆还田方式,为秸秆资源的高效利用提供理论依据。在辽宁沈阳设置连续两年(2014-2015年)的田间定位试验,采用尼龙网袋法研究免耕覆盖(NTS)、旋耕还田(RTS)和翻耕还田(PTS)3种秸秆还田方式下秸秆腐解率和碳氮磷钾养分释放率,分析秸秆还田方式对耕层土壤养分含量的影响。结果表明,RTS和PTS秸秆腐解速率均表现为前期快、后期慢,秸秆养分释放率均表现为钾>磷>碳>氮。NTS、RTS和PTS处理秸秆两年平均腐解率分别为38.8%、78.0%、65.9%,两年平均碳释放率分别为56.5%、78.8%、69.4%,氮释放率为16.7%、53.5%、38.8%,磷释放率为81.3%、92.5%、89.8%,钾释放率为92.0%、99.4%、98.9%。NTS处理秸秆腐解率及碳氮释放率与还田时间符合逻辑斯蒂曲线方程,RTS和PTS处理秸秆腐解率、碳氮释放率及3种还田方式秸秆磷钾释放率随还田时间变化符合米氏方程。秸秆还田有助于提高耕层土壤有机碳和全氮含量,RTS处理土壤全磷含量显著高于PTS处理(P < 0.05),与NTS处理全磷含量差异不显著,3种还田方式土壤全钾含量差异不显著。综合分析秸秆腐解和耕层土壤培肥效果,东北棕壤土区建议玉米秸秆还田方式为旋耕秸秆还田。
  • 图  1  2014—2015年试验区降水量及温度动态变化

    Figure  1.  Changes of precipitation and temperature of the experiment site in 2014-2015

    图  2  不同还田方式玉米秸秆腐解率

    NTS:免耕秸秆覆盖还田; RTS:旋耕秸秆还田; PTS:翻耕秸秆还田。

    Figure  2.  Decomposition rates of maize straw under different straw-returning methods

    NTS: no tillage with straw mulching; RTS: straw incorporation through rotary tillage; PTS: straw incorporation through plow tillage.

    图  3  不同还田方式玉米秸秆碳释放率

    NTS:免耕秸秆覆盖还田; RTS:旋耕秸秆还田; PTS:翻耕秸秆还田。

    Figure  3.  Carbon release rates of maize straw under different straw-returning methods

    NTS: no tillage with straw mulching; RTS: straw incorporation through rotary tillage; PTS: straw incorporation through plow tillage.

    图  4  不同还田方式玉米秸秆氮释放率

    NTS:免耕秸秆覆盖还田; RTS:旋耕秸秆还田; PTS:翻耕秸秆还田。

    Figure  4.  Nitrogen release rates of maize straw under different straw-returning methods

    NTS: no tillage with straw mulching; RTS: straw incorporation through rotary tillage; PTS: straw incorporation through plow tillage.

    图  5  不同还田方式玉米秸秆磷释放率

    NTS:免耕秸秆覆盖还田; RTS:旋耕秸秆还田; PTS:翻耕秸秆还田。

    Figure  5.  Phosphorus release rates of maize straw under different straw-returning methods

    NTS: no tillage with straw mulching; RTS: straw incorporation through rotary tillage; PTS: straw incorporation through plow tillage.

    图  6  不同还田方式玉米秸秆钾释放率

    NTS:免耕秸秆覆盖还田; RTS:旋耕秸秆还田; PTS:翻耕秸秆还田。

    Figure  6.  Potassium release rates of maize straw under different straw-returning methods

    NTS: no tillage with straw mulching; RTS: straw incorporation through rotary tillage; PTS: straw incorporation through plow tillage.

    表  1  供试秸秆基本性质

    Table  1.   Basic properties of the tested straw samples

    年份
    Year
    碳Carbon
    (g·kg-1)
    氮Nitrogen
    (g·kg-1)
    磷Phosphorus
    (g·kg-1)
    钾Potassium
    (g·kg-1)
    碳氮比
    C/N
    2014 395.1 8.95 0.90 12.5 44.14
    2015 343.7 8.33 0.50 13.0 41.25
    下载: 导出CSV

    表  2  不同还田方式玉米秸秆腐解率及养分释放率曲线特征参数

    Table  2.   Characteristic parameters of straw decomposition rates and nutrient release rates of maize straw under different straw-returning methods

    Y 处理
    Treatment
    2014 2015
    b0 b1 b2 R2 (n = 6) b0 b1 b2 R2 (n = 6)
    腐解率
    Straw decomposition rate
    NTS 37.796 2.979 0.037 0.995 7 46.446 4.088 0.046 0.996 9
    RTS 93.857 25.528 1.000 0 83.913 16.927 0.999 7
    PTS 97.504 53.406 0.999 8 69.271 20.614 0.997 9
    碳释放率
    Carbon release rate
    NTS 56.861 3.517 0.088 0.998 8 58.033 4.865 0.057 0.995 8
    RTS 89.661 15.497 0.999 3 86.964 17.609 0.999 1
    PTS 97.112 38.798 0.991 0 80.749 31.283 0.988 0
    氮释放率
    Nitrogen release rate
    NTS 8.193 2.827 0.051 0.994 3 23.872 2.700 0.057 0.987 6
    RTS 88.203 87.782 0.985 0 58.111 11.611 0.998 6
    PTS 76.472 139.161 0.992 7 41.081 5.950 0.999 5
    磷释放率
    Phosphorus release rate
    NTS 85.044 0.888 0.999 7 77.506 3.809 0.999 2
    RTS 97.367 2.842 1.000 0 90.268 1.252 0.999 8
    PTS 93.150 4.539 0.998 3 87.900 1.003 0.999 7
    钾释放率
    Potassium release rate
    NTS 90.088 1.144 0.999 8 93.442 1.873 0.999 3
    RTS 100.306 0.942 1.000 0 99.490 0.133 0.999 9
    PTS 98.472 4.911 0.994 9 99.920 0.384 1.000 0
    NTS:免耕秸秆覆盖还田; RTS:旋耕秸秆还田; PTS:翻耕秸秆还田。NTS: no tillage with straw mulching; RTS: straw incorporation through rotary tillage; PTS: straw incorporation through plow tillage.
    下载: 导出CSV

    表  3  不同秸秆还田方式下不同深度土壤养分含量

    Table  3.   Nutrients contents of different soil layers under different straw-returning methods

    g·kg-1
    年份Year 处理Treatment 有机碳Organic carbon 全氮Total nitrogen 全磷Total phosphorus 全钾Total potassium
    0–15 cm 15–25 cm 0–15 cm 15–25 cm 0–15 cm 15–25 cm 0–15 cm 15–25 cm
    2014 NTS 10.64±0.15b 10.40±0.05b 1.03±0.04b 1.02±0.01b 0.90±0.01ab 0.84±0.07ab 10.57±0.21a 10.79±0.01a
    RTS 12.29±0.17a 9.81±0.07c 1.25±0.04a 1.02±0.01b 0.93±0.02a 0.89±0.02a 10.87±0.19a 10.78±0.32a
    PTS 9.94±0.27c 11.64±0.18a 1.00±0.02b 1.12±0.04a 0.86±0.03b 0.81±0.02b 10.38±0.56a 10.48±0.39a
    2015 NTS 10.65±0.47b 10.67±0.09b 1.21±0.02b 1.03±0.10b 0.87±0.03ab 0.88±0.01a 10.88±0.39a 10.79±0.33a
    RTS 12.30±0.34a 10.15±0.42b 1.43±0.05a 1.08±0.08b 0.92±0.03a 0.87±0.02ab 11.08±0.20a 10.98±0.40a
    PTS 11.80±0.33a 12.62±0.20a 1.11±0.02c 1.27±0.10a 0.85±0.05b 0.83±0.04b 10.69±0.68a 10.68±0.51a
    NTS:免耕秸秆覆盖还田; RTS:旋耕秸秆还田; PTS:翻耕秸秆还田。不同小写字母表示不同还田方式间差异显著(P < 0.05)。NTS: no tillage with straw mulching; RTS: straw incorporation through rotary tillage; PTS: straw incorporation through plow tillage. Different lowercase letters indicate significant difference among different straw-returning methods at P < 0.05.
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-06-12
  • 录用日期:  2018-09-21
  • 刊出日期:  2019-01-01

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