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녹비작물 종류에 의한 토양 및 벼 탄소량의 변화

조현숙;성기영;박태선;서명철;전원태;양운호;강항원;이혜진
Cho, Hyeoun-Suk;Seong, Ki-Yeung;Park, Tae-Seon;Seo, Myung-Chul;Jeon, Weon-Tai;Yang, Woon-Ho;Kang, Hang-Won;Lee, Hye-Jin

  • 투고 : 2012.10.30
  • 심사 : 2012.11.25
  • 발행 : 2012.12.31

초록

녹비작물은 토양에 환원하여 이용하면 화학비료 절감, 토양의 물리화학적 특성 개량, 토양유실방지, 경관조성 등 다양한 역할을 수행한다. 녹비작물을 농경지에 환원하는 과정에서 발생될 수 있는 탄소 변화를 알아보고자 논토양에 녹비보리, 헤어리베치, 헤어리베치/보리, 화학비료구를 처리하였다. 겨울동안 녹비작물을 통하여 흡수된 탄소량은 헤어리베치는 1.22 ton $ha^{-1}$, 녹비보리는 1.24 ton $ha^{-1}$이었으며 헤어리베치/보리 혼파구는 1.54 ton $ha^{-1}$ 이었다. 토양 탄소함량은 벼 이앙 7일전에 가장 높았으며 이후부터 점차 낮아져 수확기까지 비슷한 경향이었다. 녹비종류별로는 헤어리베치와 녹비보리구에서 헤어리베치/보리 혼파구보다 높았다. 메탄 발생량은 모든 처리에서 이앙 후 7일에 가장 높았으며, 녹비 환원구에서 화학비료구보다 약 17 ~ 25배 더 많았다. 녹비종류별 메탄 발생량은 헤어리베치, 헤어리베치/보리, 녹비보리 순이었다. 벼 식물체의 탄소 흡수량은 벼 재배기간 동안 계속 증가하였으며 녹비종류별로는 차이를 보이지 않았다. 수확기의 정조와 볏짚 생산량은 녹비환원구에서 화학비료구보다 5 ~ 13% 많았으며 특히 헤어리베치/보리 혼파구에서는 14.07 ton $ha^{-1}$으로 가장 많이 생산되었다.

키워드

Green manure crop;Carbon absorption and emission;Rice plant;Paddy field

참고문헌

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피인용 문헌

  1. Effects of Green Manure Crops on Growth and Yield of Carrot for Reduction of Continuous Cropping Injury of Carrot through Crop Rotation vol.32, pp.4, 2013, https://doi.org/10.7745/KJSSF.2012.45.6.1058
  2. Effects of Continuous Application of Green Manures on Microbial Community in Paddy Soil vol.48, pp.5, 2015, https://doi.org/10.7745/KJSSF.2012.45.6.1058
  3. Effects of Green Manure on Soil Properties and Grain Yield of Sorghum (Sorghum bicolor L. Moench) vol.61, pp.4, 2016, https://doi.org/10.7745/KJSSF.2012.45.6.1058
  4. Effects of Green Manure Crops on Tomato Growth and Soil Improvement for Reduction of Continuous Cropping Injury through Crop Rotation in Greenhouse vol.28, pp.2, 2015, https://doi.org/10.7745/KJSSF.2012.45.6.1058