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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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Methane (CH₄) emissions from paddy soil significantly contribute to global greenhouse gas emissions, with transplanting time being a significant factor influencing CH₄ flux. This study evaluated the effects of four different transplanting times with 15 days intervals (1st 2022/05/10, 2nd 2022/05/25, 3rd 2022/06/10, and 4th 2022/06/25) on CH₄ emissions in a paddy soil in the Gyeongsang region of South Korea. Using a closed chamber method, CH₄ flux was measured weekly throughout the growing season of rice. The results showed that CH₄ emissions increased during the early growing stage, peaked, and subsequently decreased. Cumulative CH₄ emissions were highest for the 1st transplanting time (2022/05/10) and decreased significantly with later transplanting times, reaching a 65% reduction for the 4th transplanting time (2022/06/25). The optimal transplanting time when CH₄ emissions were minimized in Gyeongsang region, South Korea was on June 25. Correlation analysis indicated a significant correlation between root biomass and cumulative CH₄ emissions. This implied that root biomass of rice was related to CH₄ transport and production. The results of this study clearly demonstrated that modifying transplanting time of rice could be an effective strategy for reducing CH₄ emissions from paddy soil.
목차
ABSTRACT
Introduction
Materials and Methods
Results and Discussion
Conclusions
References
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