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Optimal Coupling of Straw and Synthetic Fertilizers Incorporation on Soil Properties, Active Fe Dynamics, and Greenhouse Gas Emission in Jasminum sambac (L.) Field in Southeastern China

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Institute of Geography, Fujian Normal University, Fuzhou 350007, China
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Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
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Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, Zhejiang University, Hangzhou 310058, China
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CSIC, Global Ecology Unit CREAF-CSIC-UAB, 08913 Bellaterra, Catalonia, Spain
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CREAF, 08913 Cerdanyola del Vallès, Catalonia, Spain
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Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Department of Geography and Resource Management, The Chinese University of Hong Kong, Hong Kong, China
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Author to whom correspondence should be addressed.
Sustainability 2019, 11(4), 1092; https://doi.org/10.3390/su11041092
Received: 31 December 2018 / Revised: 1 February 2019 / Accepted: 15 February 2019 / Published: 19 February 2019
(This article belongs to the Section Sustainable Agriculture, Food and Wildlife)
In agriculture, synthetic fertilizers have played a key role in enhancing food production and keeping the world’s population adequately fed. China’s participation is essential to global efforts in reducing greenhouse gas (GHG) emissions because it is the largest producer and consumer of synthetic fertilizers. A field experiment was conducted in a Jasminum sambac (L.) field to evaluate the impact different doses of fertilizers (half, standard, and double) and their combination with straw on ecosystem (including crop plants and soil) GHG emissions. The results showed that in comparison with the control or straw treatments, the straw + standard fertilizer treatment increased the soil water content. The fertilizer treatments decreased the soil pH, but the straw and combination treatments, especially the straw + standard fertilizer treatment, had higher soil pH in comparison with the fertilizer treatment. The active soil Fe (Fe2+ and Fe3+) concentration was slightly increased in the straw + standard fertilizer treatment in comparison with the control. Moreover, fertilizer increased the CO2 emission, and we detected a positive interaction between the straw application and the double fertilization dose that increased CO2 emission, but the straw + standard fertilizer treatment decreased it. Fertilizer decreased CH4 and N2O emissions, but when straw and fertilizer treatments were applied together, this increased CH4 and N2O emissions. Overall, considering the soil properties and GHG emissions, the straw + standard fertilizer treatment was the best method to enhance soil water retention capacity, improve soil acid, and mitigate greenhouse gas emissions for sustainable management of J. sambac dry croplands. View Full-Text
Keywords: soil properties; GHG emission; synthetic fertilizer; straw; Jasminum sambac (L.) soil properties; GHG emission; synthetic fertilizer; straw; Jasminum sambac (L.)
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Wang, C.; Min, Q.; Abid, A.A.; Sardans, J.; Wu, H.; Lai, D.Y.F.; Peñuelas, J.; Wang, W. Optimal Coupling of Straw and Synthetic Fertilizers Incorporation on Soil Properties, Active Fe Dynamics, and Greenhouse Gas Emission in Jasminum sambac (L.) Field in Southeastern China. Sustainability 2019, 11, 1092.

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