Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Salts Reduction Effect of Natural Zeolite in Plastic Film House Soil

천연 Zeolite를 이용한 시설재배지 토양의 염류제거 효과

  • Wee, Chi-Do (Department of Bio-Environmental Science, Sunchon National University) ;
  • Li, Jun-Xi (Department of Bio-Environmental Science, Sunchon National University) ;
  • Kim, Hong-Lim (Namhae Sub-Station, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Sohn, Bo-Kyoon (Department of Bio-Environmental Science, Sunchon National University)
  • 위치도 (순천대학교 생물환경학과) ;
  • 리준시 (순천대학교 생물환경학과) ;
  • 김홍림 (농촌진흥청 원예특작과학원 남해출장소) ;
  • 손보균 (순천대학교 생물환경학과)
  • Received : 2010.06.18
  • Accepted : 2010.09.13
  • Published : 2010.10.30
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Abstract

This study was performed to investigate the effect of zeolite on the reduction of soil EC level in the plastic film house. The EC level of experimental soil was 5.0 dS $m^{-1}$ and the zeolite was applied to the soil at seven levels (0.5, 1, 2, 5, 10, 15, 20%) with three replications. The reduction degree of soil EC level showed positive tendency to the mixing ratio of zeolite. Especially, the EC level reduced rapidly from 5.01 to 2.8 dS $m^{-1}$ in the plot where zeolite was mixed by 20% 10 days after treatment. The pH level of soil was in positive relation to the mixing ratio of zeolite, contrary to the negative relation to the concentration level of water soluble Ca, Mg and phosphorus (P). The water contents of soil mixed with 15% and 20% zeolite were 14% and 17.3% respectively but it was 12.7% for control soil. Therefore, we expect natural zeolite to salts reduction agent for exchangeable cation and phosphate which is difficult to reduce by watering and other methods.

본 연구는 천연 zeolite 처리가 시설하우스 토양의 염류집적 경감에 미치는 효과를 구명하고자 수행하였다. 시험토양의 EC수준은 5.0 dS $m^{-1}$이었으며, 제올라이트 처리는 7수준 (0.5, 1, 2, 5, 10, 15, 20%) 3반복으로 수행하였다. 제올라이트 처리에 따른 토양 EC 하락은 혼합수준과 비슷한 경향이었다. 특히, 제올라이트가 20%를 혼합된 토양의 처리 10일 후 EC수준은 5.01 dS $m^{-1}$에서 2.8dS $m^{-1}$ 수준으로 급격히 감소되었다. 토양 pH에 대한 제올라이트 효과는 미미한 수준에서 혼합비율과 같은 경향을 나타냈으며, 수용성 칼슘과 마그네슘 그리고 유효인산 농도는 크게 감소하였다. 따라서 관수제염과 그 밖에 방법 등을 통하여 제염효과를 기대하기 어려웠던 치환성 양이온과 인산의 효과적인 제염제로서 천연 zeolite의 적용이 가능할 것으로 기대한다.

Keywords

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