지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 229 - 236 (8page)
이용수
초록· 키워드
오류제보하기
Although intermittent drainage is regarded as a key factor to reduce methane ($CH_4$) emission from paddy soil during rice cultivation, it also could increase nitrous oxide ($N_2O$) emission. However, the effects of intermittent drainage on $CH_4$ and $N_2O$ emissions with different global warming potential (GWP) values have not been well examined. In the present study, the effect of a 26-day intermittent drainage from the $34^{th}$ day after transplanting (DAT) to the $60^{th}$ DAT on two greenhouse gas (GHG) fluxes and yield properties were compared with those of a continuous flooding system under different fertilization (NPK as control, PK, and NPK+straw) during rice cultivation. The effect of intermittent drainage on changing two GHG emissions was compared using the GWP value, calculated as $CO_2$ equivalents by multiplying 25 and 298 to the seasonal $CH_4$ and $N_2O$ fluxes, respectively. Under the same irrigation condition, addition of nitrogen to PK significantly increased seasonal $CH_4$ and $N_2O$ fluxes, and addition of straw to NPK increased $CH_4$ and $N_2O$. Irrespective with fertilization background, the intermittent drainage significantly reduced the total GWP by ca. 41-70% as affected by the big reduction of seasonal $CH_4$ fluxes by ca. 43-53% to that of the continuous flooding even with an increase of seasonal $N_2O$ emissions by ca. 16-43%. Rice productivity was not significantly different between the two different irrigation systems under same fertilization background. As a result, total GWP per grain yield was significantly lower in all fertilization treatments with intermittent drainage compared with continuous flooding.
목차
등록된 정보가 없습니다.
참고문헌 (0)
참고문헌 신청이 논문의 저자 정보
최근 본 자료
댓글(0)
0