벼 재배 시 경운 및 재배방법에 의한 메탄발생 양상

Sukjin Kim; Hyun-Suk Cho; Jong-Seo Choi; Ki Do Park; Jeong-Sook Jang; Shin-gu Kang; Jeong-Hwa Park; Min-Tae Kim; In-Jeong Kang; Woonho Yang

doi:10.7740/kjcs.2016.61.4.251

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2016 Vol.61, Issue 4 Preview Page Next Page

Original Research Article

벼 재배 시 경운 및 재배방법에 의한 메탄발생 양상 Changes in Methane Emissions from Paddy under Different Tillage and Cultivation Methods

31 December 2016. pp. 251-256

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Abstract

The increase in carbon stock and sustainability of crop production are the main challenges in agricultural fields relevant to climate change. Methane is the most important greenhouse gas emitted from paddy fields. This study was conducted to investigate the effects of tillage and cultivation methods on methane emissions in rice production in 2014 and 2015. Different combinations of tillage and cultivation were implemented, including conventional tillage-transplanting (T-T), tillage-wet hill seeding (T-W), minimum tillage-dry seeding (MT-D), and no-tillage-dry seeding (NT-D). The amount of methane emitted was the highest in T-T treatment. In MT-D and NT-D treatments, methane emissions were significantly decreased by 77%, compared with that in T-T treatment. Conversely, the soil total carbon (STC) content was higher in MT-D and NT-D plots than in tillage plots. In both years, methane emissions were highly correlated with the dry weight of rice (R²= 0.62~0.96), although the cumulative emissions during the rice growing period was higher in 2014 than in 2015. T-T treatment showed the highest R²(0.93) among the four treatments. Rice grain yields did not significantly differ with the tillage and cultivation methods used. These results suggest that NT-D practice in rice production could reduce the methane emissions and increase the STC content without loss in grain yield.

Keywords

methane

no-tillage

paddy

rice

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 61
No :4
Pages :251-256
Received Date : 2016-11-14
Revised Date : 2016-11-22
Accepted Date : 2016-11-24
DOI :https://doi.org/10.7740/kjcs.2016.61.4.251

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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