한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)

  • 제44권3호
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  • Pages.321-330
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  • 2011
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  • 0367-6315(pISSN)
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  • 2288-2162(eISSN)
한국토양비료학회 (Korean Society of Soil Science and Fertilizer)
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원예용 상토 재료 피트모스, 펄라이트, 버미큘라이트의 혼합비율에 따른 물리적 특성 변화

Physical Properties of the Horticultural Substrate According to Mixing Ratio of Peatmoss, Perlite and Vermiculite

  • 김혁수 (서울시립대학교 환경원예학과) ;
  • 김계훈 (서울시립대학교 환경원예학과)
  • Kim, Hyuck-Soo (Department of Environmental Horticulture, The University of Seoul) ;
  • Kim, Kye-Hoon (Department of Environmental Horticulture, The University of Seoul)
  • 투고 : 2011.03.17
  • 심사 : 2011.06.17
  • 발행 : 2011.06.30
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초록

원예용 상토 생산 시 자재의 혼합으로 결정되는 상토의 물리적 특성은 화학적 특성과는 달리 식물생육기간동안 변화가 거의 없고, 식물 생육에 직접적인 영향을 미친다. 따라서 자재의 혼합비율 설정은 매우 중요하며, 이에 대한 분석 연구는 지속적으로 이뤄져야 한다. 하지만 우리나라의 상토 분석법과 국제적으로 표준화되어 있는 분석법간의 차이로 인해 외국의 분석결과와 국내의 분석결과를 비교 해석하는데 어려움이 있다. 따라서 본 연구에서는 EN 분석법과 RDA 분석법에 따라 피트모스, 펄라이트, 버미큘라이트의 혼합비율에 따른 물리적 특성 변화를 관찰하고, 분석법 간의 차이점을 조사하였다. 연구결과, 각각의 분석법에 따른 상토의 물리적 특성에 차이가 있었으며, 이는 상토 분석 시 전처리 과정의 차이에 의한 것으로 보인다. 또한 원예용 상토 자재로 널리 사용 중인 펄라이트는 내부 공극은 많으나 겉이 막혀있는 특성 때문에 농촌진흥청 상토 분석법에 제시된 입자밀도 항목 중 기존 Pycnometer를 응용한 입자밀도의 측정으로 분석할 경우 EN 분석법과 다른 경향의 결과를 나타냈다. 식물 생육에 적합한 물리성인 공극률 85% 이상, 기상 20-30% 등과 비교 시 EN 분석법으로 분석한 결과에서 피트모스가 혼합된 상토 중 8:2:0과 6:4:0 (peatmoss:perlite: vermiculite)의 상토가 적정기준을 만족하였고, RDA 분석법으로 분석한 결과에서는 6:2:2로 혼합된 상토가 적정기준을 만족하였다. 하지만 RDA 분석법에 제시된 전처리 과정 중 건조처리의 영향으로 인해 EAW와 WBC의 기준까지 만족하는 상토는 없었으며, 분석 방법 전처리 과정에 대한 수정이 필요할 것으로 판단된다. 본 연구에서 제시한 결과를 바탕으로 상토 자재 혼합에 따른 물리적 특성 변화를 삼각도에 응용하게 되면 향후 상토 물리성 연구 및 분석 방법 간의 관계 연구에 많은 도움을 줄 것으로 생각한다.

The physical properties of horticultural substrate are important for optimal plant growth. The physical properties should be properly maintained during the crop growing season for producing higher yield. This experiment was carried out to evaluate the physical properties of different mixtures from various raw materials as horticultural substrates. The mixtures at the different ratios of peatmoss, perlite and vermiculite subjected to 10:0:0, 8:2:0, 6:4:0, 4:6:0, 2:8:0, 0:8:2, 0:10:0, 0:6:4, 0:4:6, 0:2:8, 8:0:2, 0:0:10, 6:0:4, 4:0:6, 2:0:8, 2:6:2, 2:4:4, 4:2:4, 4:4:2, 6:2:2 and 2:2:6 were prepared and analyzed according to two methods of the European Standardization (EN) and Rural Development Administration (RDA). The optimum range of physical properties of a specific horticultural substrate can be predicted using physical-property-triangle. This triangle can also be used to convert a physical property from the EN method to that from the RDA method. Results showed that the mixture at a ratio of > 60% peatmoss, in most cases, is in the range of optimum physical condition for plant growth. We conclude that the developed physical-property-triangle can be suitable to suggest the optimum ratios of horticultural substrates used in this study.

키워드

참고문헌

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피인용 문헌

  1. A Comparative Study on Carbon Storage and Physicochemical Properties of Vegetation Soil for Extensive Green Rooftop Used in Korea vol.18, pp.1, 2015, https://doi.org/10.13087/kosert.2015.18.1.115
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