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Responses of Soil Respiration and Organic Carbon to Straw Mulching and Ridge Tillage in Maize Field of a Triple Cropping System in the Hilly Region of Southwest China

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  • Sai Zhang

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China)

  • Hafiz Athar Hussain

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China
    Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Beijing 100081, China)

  • Longchang Wang

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China)

  • Saddam Hussain

    (Department of Agronomy, University of Agriculture, Faisalabad 38040, Punjab Pakistan)

  • Biao Li

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China
    Gui Zhou Institute of Biological Technology, Gui Yang 550006, China)

  • Hangfei Zhou

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China)

  • Haixiu Luo

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China)

  • Xiaoyu Zhang

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China)

  • Zhonglian Ma

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China)

  • Ling Long

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China)

  • Yisha Dai

    (Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education/Engineering Research Center of South Upland Agriculture, Ministry of Education/College of Agronomy and Biotechnology, Southwest University, Chongqing 400715, China)

Abstract

Soil disturbance by tillage practices promotes soil respiration which is a main source of carbon dioxide emission into the atmosphere. The present study was conducted to investigate the effect of different tillage practices on soil respiration and the carbon source/sink characteristics of maize farmland ecosystems in the wheat–maize–soybean cropping system. Six tillage treatments, namely, traditional tillage (T), ridge tillage (R), traditional tillage + straw mulching (TS), ridge tillage + straw mulching (RS), traditional tillage + straw mulching + decomposing inoculants (TSD), and ridge tillage + straw mulching + decomposing inoculants (RSD), were used to measure the soil respiration and its hydrothermal factors. The results showed that the intensity of soil respiration increased initially and decreased afterwards throughout the growth period of maize ranging from 1.011 to 5.575 μmol (m 2 ·s) −1 . The soil respiration rate under different treatments varied remarkably presenting a trend of RSD > TSD > TS > RS > T > R. Ridge tillage reduced the soil respiration rate of maize farmland while straw mulching improved it. Meanwhile, ridge tillage and straw mulching increased the soil temperature sensitivity index of soil respiration, but the addition of decomposing inoculants reduced this trend. The soil moisture response threshold under ridge tillage was lower, while the straw mulching was found to increase it, compared with the control. Moreover, there was a positive correlation between trapped soil fauna and soil respiration. Compared with the control, ridge tillage and straw mulching were beneficial to the carbon sink of the farmland ecosystem as shown by the maize field for the entire growing season.

Suggested Citation

  • Sai Zhang & Hafiz Athar Hussain & Longchang Wang & Saddam Hussain & Biao Li & Hangfei Zhou & Haixiu Luo & Xiaoyu Zhang & Zhonglian Ma & Ling Long & Yisha Dai, 2019. "Responses of Soil Respiration and Organic Carbon to Straw Mulching and Ridge Tillage in Maize Field of a Triple Cropping System in the Hilly Region of Southwest China," Sustainability, MDPI, vol. 11(11), pages 1-15, May.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:11:p:3068-:d:235879
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    References listed on IDEAS

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    1. Yiqi Luo & Shiqiang Wan & Dafeng Hui & Linda L. Wallace, 2001. "Acclimatization of soil respiration to warming in a tall grass prairie," Nature, Nature, vol. 413(6856), pages 622-625, October.
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    Cited by:

    1. Jun Feng & Hafiz Athar Hussain & Saddam Hussain & Chao Shi & Linna Cholidah & Shengnan Men & Jianhong Ke & Longchang Wang, 2020. "Optimum Water and Fertilizer Management for Better Growth and Resource Use Efficiency of Rapeseed in Rainy and Drought Seasons," Sustainability, MDPI, vol. 12(2), pages 1-18, January.
    2. Yao, Yao & Li, Guang & Lu, Yanhua & Liu, Shuainan, 2023. "Modelling the impact of climate change and tillage practices on soil CO2 emissions from dry farmland in the Loess Plateau of China," Ecological Modelling, Elsevier, vol. 478(C).
    3. Hongli Li & Haiou Shen & Yu Wang & Yin Wang & Qiang Gao, 2021. "Effects of Ridge Tillage and Straw Returning on Runoff and Soil Loss under Simulated Rainfall in the Mollisol Region of Northeast China," Sustainability, MDPI, vol. 13(19), pages 1-13, September.

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