한국환경농학회지 (Korean Journal of Environmental Agriculture)

  • 제32권4호
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  • Pages.260-267
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  • 2013
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  • 1225-3537(pISSN)
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  • 2233-4173(eISSN)
한국환경농학회 (The Korean Society of Environmental Agriculture)
권호 표지
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밭토양에서 퇴비시용과 비닐멀칭이 토양탄소 축적에 미치는 영향

Effects of Compost Application and Plastic Mulching on Soil Carbon Sequestration in Upland Soil

  • 강점순 (부산대학교 원예생명과학과) ;
  • 서정민 (부산대학교 바이오환경에너지학과) ;
  • 신현무 (경성대학교 환경공학과) ;
  • 조재환 (부산대학교 농업경제학과) ;
  • 홍창오 (부산대학교 생명환경화학과)
  • Kang, Jum-Soon (Department of Horticultural Bioscience, Pusan National University) ;
  • Suh, Jeong-Min (Department of Bio-Environmental Energy, Pusan National University) ;
  • Shin, Hyun-Moo (Department of Environmental Engineering, Kyungsung University) ;
  • Cho, Jae-Hwan (Department of Agricultural Economics, Pusan National University) ;
  • Hong, Chang-Oh (Department of Life Science and Environmental Biochemistry, Pusan National University)
  • 투고 : 2013.09.15
  • 심사 : 2013.10.26
  • 발행 : 2013.12.31
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초록

본 연구는 고추재배시험 기간 동안 축분퇴비의 시용량과 비닐멀칭 유무에 따른 토양 유기탄소의 함량 변화와 토양 탄소의 안정화 정도를 조사하기 위해 실시되어졌다. 고추재배기간 동안 퇴비의 시용과 비닐멀칭 처리에 따라 토양 내 유기탄소 함량의 유의한 증가는 발견되어지지 않았다. 또한 퇴비시용과 비닐멀칭 처리에 의한 토양의 물리적 특성 변화는 관찰되지 않았다. 이러한 결과는 본 연구의 짧은 조사기간과 관련이 있는 것으로 판단된다. 그러나 퇴비의 시용에 의해 쉽게 분해 가능한 형태인 열수추출 가능한 탄소의 함량은 유의하게 감소하는 결과를 나타내었다. 추천량인 20 Mg/ha의 퇴비를 시용하였을 때 지하부의 바이오매스 함량이 최대를 나타내었다. 이상의 결과를 미루어 볼 때 장기적으로 추천량의 퇴비를 지속적으로 시용한다면 토양 유기탄소의 함량 증대와 안정화 정도를 향상시킬 수 있을 것으로 판단된다.

BACKGROUND: In most studies, soil carbon sequestration has been evaluated simply with change of soil organic carbon content. So far, information regarding stability of soil organic carbon is limited. METHODS AND RESULTS: This study was conducted to determine changes in soil organic carbon (SOC) content and stability of carbon in response to compost application rates and plastic mulching treatment during the hot pepper growing season. Under the pot experiment condition, compost was mixed with an arable soil at rates corresponding to 0, 10, 20, and 40 Mg/ha. To determine effects of plastic mulching on soil carbon sequestration, plastic mulching and no mulching treatments were set up in soils amended with the application rate of 20 Mg/ha. The SOC content did not significantly increase with application of compost and plastic mulching at harvest time. No significant changes in bulk density with compost application and plastic mulching was found. These might result from short duration of experiment. While hot water extractable organic carbon content significantly decreased with compost application and plastic mulching, humic substances increased. Belowground biomass of hot pepper was biggest at the recommended application rate (20 Mg/ha) of compost. CONCLUSION: From the above results, continuous application of compost at the recommended application rate could improve increase in SOC content and stability of carbon in long term aspect.

키워드

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