대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제32권11호
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  • Pages.1024-1029
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  • 2010
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지

고랭지 밭 토양유실 방지를 위한 폴리머 소재(폴리아크릴아마이드 및 바이오폴리머)의 현장적용성 평가: 작물재배실험

Effects of Polyacrylamide and Biopolymer on Soil Erosion and Crop Productivity in Sloping Uplands: A Field Experiment

  • 최용범 (강원대학교 바이오자원환경학과) ;
  • 최봉수 (강원대학교 바이오자원환경학과) ;
  • 김세원 (강원도농업기술원) ;
  • 이상수 (강원대학교 바이오자원환경학과) ;
  • 옥용식 (강원대학교 바이오자원환경학과)
  • Choi, Yong-Beom (Department of Biological Environment, Kangwon National University) ;
  • Choi, Bong-Su (Department of Biological Environment, Kangwon National University) ;
  • Kim, Se-Won (Gangwondo Agricultural Research & Extension Services) ;
  • Lee, Sang-Soo (Department of Biological Environment, Kangwon National University) ;
  • Ok, Yong-Sik (Department of Biological Environment, Kangwon National University)
  • 투고 : 2010.10.19
  • 심사 : 2010.11.17
  • 발행 : 2010.11.30
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초록

본 연구에서는 경사도 20%의 강원도 경작지 실험포장(가로 3 m${\times}$세로 18 m)을 대상으로 자연강우 조건하에서 폴리머 기반 토양개량제인 polyacrylamide (PAM) 및 바이오폴리머의 처리가 토양유실 및 작물의 생장에 미치는 영향을 평가하였다. 40 kg/ha PAM 및 바이오폴리머 처리시 토양입단 안정도는 대조구에 비해 최대 11% 증가하였다. 생육조사 결과 폴리머 처리에 따라 무(Raphanus sativus)의 엽장은 증가하였으나 수확량의 경우 유의적인 차이를 나타내지는 않았다(P>0.05). 토양유실의 경우 폴리머 기반 토양개량제 처리시 토양유실량이 최대 41% 감소하였으나 유거수량에는 유의적인 차이가 없었다. 또한 토양유실량은 강우강도의 증가에 따라 대수관계($R^2=0.85$)로 증가함을 확인하였다. 이상의 결과로부터 피복이 완전치 못한 경사지 경작지에 대한 폴리머 기반 토양개량제 시용은 토양유실 저감에 효과적이며 작물생육 촉진 및 토양질 향상에도 기여할 수 있을 것으로 판단된다.

Use of polymeric soil amendments is an emerging way to reduce soil erosion, and improve crop productivity and soil quality. Objective of this study was to evaluate the effects of anionic polyacrylamide (PAM) and synthetic biopolymer on soil erosion, crop growth and soil quality. The aqueous solutions of PAM and biopolymer at 40 kg/ha were applied to loamy soil plots (3 m width by 18 m long) having a 20% slope during radish (Raphanus sativus) cultivation. Results showed that PAM and biopolymer treatments increased aggregate stability up to 11% compared to the untreated control. Treatments of PAM and biopolymer also increased leaf length of radish but there was no significant difference in crop yield. Soil loss was decreased by up to 41% using the polymeric soil amendments; however, no difference in runoff was found, compared to the untreated control. Soil loss was logarithmically increased against an increase in rainfall intensity ($R^2=0.85$). Our findings suggest that proper use of polymeric soil amendments would be beneficial to maintain soil quality and reduce soil erosion in sloping uplands.

키워드

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