Effects of plastic and straw mulching on soil microbial P limitations in maize fields: Dependency on soil organic carbon demonstrated by ecoenzymatic stoichiometry

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Zizong Ma
  • Xucheng Zhang
  • Bangyu Zheng
  • Shanchao Yue
  • Xuechen Zhang
  • Bingnian Zhai
  • Zhaohui Wang
  • Wei Zheng
  • Ziyan Li
  • Kazem Zamanian
  • Bahar S. Razavi

Externe Organisationen

  • Northwest Agriculture and Forestry University
  • Key Laboratory of High Water Utilization on Dryland of Gansu Province
  • Georg-August-Universität Göttingen
  • Ministry of Agriculture of the People's Republic of China
  • Christian-Albrechts-Universität zu Kiel (CAU)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer114928
FachzeitschriftGEODERMA
Jahrgang388
PublikationsstatusVeröffentlicht - 15 Apr. 2021
Extern publiziertJa

Abstract

Mulching rain-fed farmland ecosystems changes the soil physicochemical properties, especially soil organic carbon (SOC), but the metabolic limitations of soil microorganisms after these changes are unclear. We established a long-term experiment in 2012 with three treatments: no mulch (CK), straw mulch (SM), and plastic film mulch (FM). In 2019 the soil enzyme activities were measured in five maize growing periods: planting time, six-leaf period, silking period, milk period, and physiological maturity. Extracellular enzymatic stoichiometry models were used to examine microbial metabolic limitations. The vector length and angle were employed to determine the C and N/P limitations of soil microorganisms. Compared with CK, the average SOC and total nitrogen (TN) contents were 9.7% and 7.8% higher under SM, respectively, in each period. The SOC, TN, and total phosphorus (TP) contents were 5.6%, 4.8%, and 2.8% lower under FM, respectively. Compared with CK, the C- and N-acquiring enzyme activities were 20.5% and 5.2% lower under FM, respectively. The alkaline phosphatase enzyme activities were 2.7% and 13.5% higher under SM and FM, respectively, than CK. Soil nutrients, pH, and temperature influenced the C and P limitations of soil microorganisms. The different P limitation responses under SM and FM were mainly due to SOM. The decomposition of SOC was a key source of soil available P. The soil hydrothermal conditions under FM accelerated the decomposition of SOC in the early years, thereby increasing the P limitation. However, long-term SM increased the SOC due to the annual input of straw and its decomposition released available P to alleviate the P limitation for microorganisms. Thus, the temperature, water, pH, and SOC affect the P limitation for microbes under mulching conditions, but the SOC content of alkaline soil in arid farmland is the main factor that leads to microbial P limitation.

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Effects of plastic and straw mulching on soil microbial P limitations in maize fields: Dependency on soil organic carbon demonstrated by ecoenzymatic stoichiometry. / Ma, Zizong; Zhang, Xucheng; Zheng, Bangyu et al.
in: GEODERMA, Jahrgang 388, 114928, 15.04.2021.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Ma Z, Zhang X, Zheng B, Yue S, Zhang X, Zhai B et al. Effects of plastic and straw mulching on soil microbial P limitations in maize fields: Dependency on soil organic carbon demonstrated by ecoenzymatic stoichiometry. GEODERMA. 2021 Apr 15;388:114928. doi: 10.1016/j.geoderma.2021.114928
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@article{6368cf89b3aa45c4b0815689a87867b7,
title = "Effects of plastic and straw mulching on soil microbial P limitations in maize fields: Dependency on soil organic carbon demonstrated by ecoenzymatic stoichiometry",
abstract = "Mulching rain-fed farmland ecosystems changes the soil physicochemical properties, especially soil organic carbon (SOC), but the metabolic limitations of soil microorganisms after these changes are unclear. We established a long-term experiment in 2012 with three treatments: no mulch (CK), straw mulch (SM), and plastic film mulch (FM). In 2019 the soil enzyme activities were measured in five maize growing periods: planting time, six-leaf period, silking period, milk period, and physiological maturity. Extracellular enzymatic stoichiometry models were used to examine microbial metabolic limitations. The vector length and angle were employed to determine the C and N/P limitations of soil microorganisms. Compared with CK, the average SOC and total nitrogen (TN) contents were 9.7% and 7.8% higher under SM, respectively, in each period. The SOC, TN, and total phosphorus (TP) contents were 5.6%, 4.8%, and 2.8% lower under FM, respectively. Compared with CK, the C- and N-acquiring enzyme activities were 20.5% and 5.2% lower under FM, respectively. The alkaline phosphatase enzyme activities were 2.7% and 13.5% higher under SM and FM, respectively, than CK. Soil nutrients, pH, and temperature influenced the C and P limitations of soil microorganisms. The different P limitation responses under SM and FM were mainly due to SOM. The decomposition of SOC was a key source of soil available P. The soil hydrothermal conditions under FM accelerated the decomposition of SOC in the early years, thereby increasing the P limitation. However, long-term SM increased the SOC due to the annual input of straw and its decomposition released available P to alleviate the P limitation for microorganisms. Thus, the temperature, water, pH, and SOC affect the P limitation for microbes under mulching conditions, but the SOC content of alkaline soil in arid farmland is the main factor that leads to microbial P limitation.",
keywords = "Ecoenzymatic stoichiometry, Microbial metabolism, Mulching measures, Rain-fed agricultural ecosystem",
author = "Zizong Ma and Xucheng Zhang and Bangyu Zheng and Shanchao Yue and Xuechen Zhang and Bingnian Zhai and Zhaohui Wang and Wei Zheng and Ziyan Li and Kazem Zamanian and Razavi, {Bahar S.}",
note = "Funding information: This study was supported by the National Key Research and Development Program of China ( 2017YFD02018018 ), National Natural Science Foundation of China ( 40501332 ), Foundation of Key Laboratory of High Water Utilization on Dryland of Gansu Province ( HNSJJ-2019-02 ), Project of Promoting Agricultural Science and Technology Demonstration of Yangling ( 2018-GG-29 ), Natural Science Foundation of Shaanxi Province ( 2016JQ3005 ), and Fundamental Research Funds for the Central Universities ( 2452015046 ).",
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doi = "10.1016/j.geoderma.2021.114928",
language = "English",
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journal = "GEODERMA",
issn = "0016-7061",
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Download

TY - JOUR

T1 - Effects of plastic and straw mulching on soil microbial P limitations in maize fields

T2 - Dependency on soil organic carbon demonstrated by ecoenzymatic stoichiometry

AU - Ma, Zizong

AU - Zhang, Xucheng

AU - Zheng, Bangyu

AU - Yue, Shanchao

AU - Zhang, Xuechen

AU - Zhai, Bingnian

AU - Wang, Zhaohui

AU - Zheng, Wei

AU - Li, Ziyan

AU - Zamanian, Kazem

AU - Razavi, Bahar S.

N1 - Funding information: This study was supported by the National Key Research and Development Program of China ( 2017YFD02018018 ), National Natural Science Foundation of China ( 40501332 ), Foundation of Key Laboratory of High Water Utilization on Dryland of Gansu Province ( HNSJJ-2019-02 ), Project of Promoting Agricultural Science and Technology Demonstration of Yangling ( 2018-GG-29 ), Natural Science Foundation of Shaanxi Province ( 2016JQ3005 ), and Fundamental Research Funds for the Central Universities ( 2452015046 ).

PY - 2021/4/15

Y1 - 2021/4/15

N2 - Mulching rain-fed farmland ecosystems changes the soil physicochemical properties, especially soil organic carbon (SOC), but the metabolic limitations of soil microorganisms after these changes are unclear. We established a long-term experiment in 2012 with three treatments: no mulch (CK), straw mulch (SM), and plastic film mulch (FM). In 2019 the soil enzyme activities were measured in five maize growing periods: planting time, six-leaf period, silking period, milk period, and physiological maturity. Extracellular enzymatic stoichiometry models were used to examine microbial metabolic limitations. The vector length and angle were employed to determine the C and N/P limitations of soil microorganisms. Compared with CK, the average SOC and total nitrogen (TN) contents were 9.7% and 7.8% higher under SM, respectively, in each period. The SOC, TN, and total phosphorus (TP) contents were 5.6%, 4.8%, and 2.8% lower under FM, respectively. Compared with CK, the C- and N-acquiring enzyme activities were 20.5% and 5.2% lower under FM, respectively. The alkaline phosphatase enzyme activities were 2.7% and 13.5% higher under SM and FM, respectively, than CK. Soil nutrients, pH, and temperature influenced the C and P limitations of soil microorganisms. The different P limitation responses under SM and FM were mainly due to SOM. The decomposition of SOC was a key source of soil available P. The soil hydrothermal conditions under FM accelerated the decomposition of SOC in the early years, thereby increasing the P limitation. However, long-term SM increased the SOC due to the annual input of straw and its decomposition released available P to alleviate the P limitation for microorganisms. Thus, the temperature, water, pH, and SOC affect the P limitation for microbes under mulching conditions, but the SOC content of alkaline soil in arid farmland is the main factor that leads to microbial P limitation.

AB - Mulching rain-fed farmland ecosystems changes the soil physicochemical properties, especially soil organic carbon (SOC), but the metabolic limitations of soil microorganisms after these changes are unclear. We established a long-term experiment in 2012 with three treatments: no mulch (CK), straw mulch (SM), and plastic film mulch (FM). In 2019 the soil enzyme activities were measured in five maize growing periods: planting time, six-leaf period, silking period, milk period, and physiological maturity. Extracellular enzymatic stoichiometry models were used to examine microbial metabolic limitations. The vector length and angle were employed to determine the C and N/P limitations of soil microorganisms. Compared with CK, the average SOC and total nitrogen (TN) contents were 9.7% and 7.8% higher under SM, respectively, in each period. The SOC, TN, and total phosphorus (TP) contents were 5.6%, 4.8%, and 2.8% lower under FM, respectively. Compared with CK, the C- and N-acquiring enzyme activities were 20.5% and 5.2% lower under FM, respectively. The alkaline phosphatase enzyme activities were 2.7% and 13.5% higher under SM and FM, respectively, than CK. Soil nutrients, pH, and temperature influenced the C and P limitations of soil microorganisms. The different P limitation responses under SM and FM were mainly due to SOM. The decomposition of SOC was a key source of soil available P. The soil hydrothermal conditions under FM accelerated the decomposition of SOC in the early years, thereby increasing the P limitation. However, long-term SM increased the SOC due to the annual input of straw and its decomposition released available P to alleviate the P limitation for microorganisms. Thus, the temperature, water, pH, and SOC affect the P limitation for microbes under mulching conditions, but the SOC content of alkaline soil in arid farmland is the main factor that leads to microbial P limitation.

KW - Ecoenzymatic stoichiometry

KW - Microbial metabolism

KW - Mulching measures

KW - Rain-fed agricultural ecosystem

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U2 - 10.1016/j.geoderma.2021.114928

DO - 10.1016/j.geoderma.2021.114928

M3 - Article

AN - SCOPUS:85101228049

VL - 388

JO - GEODERMA

JF - GEODERMA

SN - 0016-7061

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ER -

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