Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Effect of Green Manure Crop and Biochar on Nitrous Oxide Emission from Red Pepper Field

녹비작물과 바이오숯의 고추 재배지 아산화질소 배출량 저감 효과

  • Seo, Young-Ho (Gangwon Agricultural Research & Extension Services) ;
  • Kim, Se-Won (Gangwon Agricultural Research & Extension Services) ;
  • Choi, Seung-Chul (Gangwon Agricultural Research & Extension Services) ;
  • Kim, In-Jong (Gangwon Agricultural Research & Extension Services) ;
  • Kim, Kyung-Hi (Gangwon Agricultural Research & Extension Services) ;
  • Kim, Gun-Yeob (National Academy of Agricultural Science, RDA)
  • Received : 2012.07.16
  • Accepted : 2012.08.14
  • Published : 2012.08.31
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Abstract

Atmospheric nitrous oxide ($N_2O$) level has been increasing at a rate of 0.2~0.3% per year. The rise in $N_2O$ concentration in atmosphere was mainly due to an increased application of nitrogen fertilizers. The objective of the study was to assess the effect of green manure crop and biochar on $N_2O$ emissions from upland crop field. The green manure crop used in the study was hairy vetch and the cultivated crop was red pepper (Capsicum annuum L.). Nitrogen was applied at a rate of $190kg\;ha^{-1}$, standard N fertilization rate for red pepper. Emissions of $N_2O$ from the field were reduced from the plots applied with hairy vetch and biochar by 46.5% and 24.6%, respectively, compared with nitrogen fertilizer treated plots with $N_2O$ emission of $1.14kg\;N_2O-N\;ha^{-1}$. The results from the study imply that green manure crop and biochar can be utilized to reduce greenhouse gas emission from the upland crop field.

농업 부문에서 온실가스 배출량을 줄이기 위하여 녹비작물인 헤어리베치와 바이오숯을 이용하였을 때 밭작물 재배지에서 아산화질소 배출량 저감 효과를 평가하였다. 질소 시용량은 고추의 표준 시비량인 $190kg\;ha^{-1}$이었으며, 주 2회 시료를 채취하여 GC/ECD로 아산화질소를 분석하였다. 대조구인 질소질 비료(요소) 처리구의 아산화질소 배출량은 $1.14kg\;N_2O-N\;ha^{-1}$이었으며, 헤어리베치와 바이오숯+질소질 비료 처리구의 아산화질소 배출량은 각각 $0.61kg\;N_2O-N\;ha^{-1}$과 $0.86kg\;N_2O-N\;ha^{-1}$로 온실가스 배출을 각각 46.5%와 24.6% 줄였다.

Keywords

References

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