벼 재배 시 경운 및 재배방법에 의한 메탄발생 양상

• 영문명: Changes in Methane Emissions from Paddy under Different Tillage and Cultivation Methods
• 발행기관: 한국작물학회
• 저자명: 김숙진(Sukjin Kim) 조현숙(Hyun-Suk Cho) 최종서(Jong-Seo Choi) 박기도(Ki Do Park) 장정숙(Jeong-Sook Jang) 강신구(Shin-gu Kang) 박정화(Jeong-Hwa Park) 김민태(Min-Tae Kim) 강인정(In-Jeong Kang) 양운호(Woonho Yang)
• 간행물 정보: 『한국작물학회지』제61권 제4호, 251~256쪽, 전체 6쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2016.12.30

영문 초록

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.

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키워드

methane no-tillage paddy rice