Effects of biochar on the growth of maize in coastal salt-affected soil in the Yellow River Delta

Global climate change is exerting profound impacts on coastal ecosystems in the Yellow River Delta, leading to significant degradation, with plant growth constrained by dual stressors of saltwater intrusion and declining nutrient supply. To investigate the effects of biochar (BC) on maize growth in...

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Main Authors: Zhao Lumeng, Chen Kun, Wang Tianwen, Zhao Lize, Liang Zhimeng
Format: Article
Language:English
Published: EDP Sciences 2025-01-01
Series:E3S Web of Conferences
Online Access:https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/28/e3sconf_eppct2025_02020.pdf
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author Zhao Lumeng
Chen Kun
Wang Tianwen
Zhao Lize
Liang Zhimeng
author_facet Zhao Lumeng
Chen Kun
Wang Tianwen
Zhao Lize
Liang Zhimeng
author_sort Zhao Lumeng
collection DOAJ
description Global climate change is exerting profound impacts on coastal ecosystems in the Yellow River Delta, leading to significant degradation, with plant growth constrained by dual stressors of saltwater intrusion and declining nutrient supply. To investigate the effects of biochar (BC) on maize growth in coastal salt-affected soil of the Yellow River Delta, this study employed a pot experiment to systematically analyze the impact of maize straw BC (pyrolyzed at 300 °C, 450 °C, and 600 °C) on maize growth in coastal salt-affected soil. The results demonstrated that BC treatments at different pyrolysis temperatures significantly increased the net photosynthetic rate (232.40%–379.72%), stomatal conductance (87.47%–244.24%), and transpiration rate (69.52%–219.05%) of maize, thereby promoting biomass accumulation. Specifically, the root fresh weight in the BC300 and BC450 treatment groups increased by 211.29% and 162.44%, respectively, compared to CK, significantly higher than that of BC600 (104.84%). This study confirms that BC amendment can effectively improve photosynthetic performance and biomass accumulation in maize grown in salt-affected soil, with medium-low temperature BC exhibiting superior effects. These findings provide a theoretical basis for salt-affected soil remediation, maize productivity enhancement, and ecological restoration with carbon sequestration potential in coastal wetlands.
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spelling doaj-art-2401616cac0342a5b9029581f8371c492025-08-20T03:54:07ZengEDP SciencesE3S Web of Conferences2267-12422025-01-016280202010.1051/e3sconf/202562802020e3sconf_eppct2025_02020Effects of biochar on the growth of maize in coastal salt-affected soil in the Yellow River DeltaZhao Lumeng0Chen Kun1Wang Tianwen2Zhao Lize3Liang Zhimeng4Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of ChinaInstitute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of ChinaInstitute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of ChinaInstitute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of ChinaInstitute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of ChinaGlobal climate change is exerting profound impacts on coastal ecosystems in the Yellow River Delta, leading to significant degradation, with plant growth constrained by dual stressors of saltwater intrusion and declining nutrient supply. To investigate the effects of biochar (BC) on maize growth in coastal salt-affected soil of the Yellow River Delta, this study employed a pot experiment to systematically analyze the impact of maize straw BC (pyrolyzed at 300 °C, 450 °C, and 600 °C) on maize growth in coastal salt-affected soil. The results demonstrated that BC treatments at different pyrolysis temperatures significantly increased the net photosynthetic rate (232.40%–379.72%), stomatal conductance (87.47%–244.24%), and transpiration rate (69.52%–219.05%) of maize, thereby promoting biomass accumulation. Specifically, the root fresh weight in the BC300 and BC450 treatment groups increased by 211.29% and 162.44%, respectively, compared to CK, significantly higher than that of BC600 (104.84%). This study confirms that BC amendment can effectively improve photosynthetic performance and biomass accumulation in maize grown in salt-affected soil, with medium-low temperature BC exhibiting superior effects. These findings provide a theoretical basis for salt-affected soil remediation, maize productivity enhancement, and ecological restoration with carbon sequestration potential in coastal wetlands.https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/28/e3sconf_eppct2025_02020.pdf
spellingShingle Zhao Lumeng
Chen Kun
Wang Tianwen
Zhao Lize
Liang Zhimeng
Effects of biochar on the growth of maize in coastal salt-affected soil in the Yellow River Delta
E3S Web of Conferences
title Effects of biochar on the growth of maize in coastal salt-affected soil in the Yellow River Delta
title_full Effects of biochar on the growth of maize in coastal salt-affected soil in the Yellow River Delta
title_fullStr Effects of biochar on the growth of maize in coastal salt-affected soil in the Yellow River Delta
title_full_unstemmed Effects of biochar on the growth of maize in coastal salt-affected soil in the Yellow River Delta
title_short Effects of biochar on the growth of maize in coastal salt-affected soil in the Yellow River Delta
title_sort effects of biochar on the growth of maize in coastal salt affected soil in the yellow river delta
url https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/28/e3sconf_eppct2025_02020.pdf
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AT wangtianwen effectsofbiocharonthegrowthofmaizeincoastalsaltaffectedsoilintheyellowriverdelta
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