Effect of EC and pH of Nutrient Solution on the Growth and Quality of Single-Stemmed Rose in Cutted Rose Production Factory

절화장미 수경재배시 배양액의 농도와 pH가 생육과 품질에 미치는 영향

  • Lee Hye Jin (Dept. of Environmental Horticulture, University of Seoul) ;
  • Yang Eun-Young (Dept. of Environmental Horticulture, University of Seoul) ;
  • Park Keum-Soon (Dept. of Environmental Horticulture, University of Seoul) ;
  • Lee Yong-Beom (Dept. of Environmental Horticulture, University of Seoul) ;
  • Bae Jong Hyang (Division of Plant and Resource Science, Wonkwang University) ;
  • Jeon Kyung Soo (Division of Bio-Environment Science, Wonkwang University)
  • 이혜진 (서울시립대학교 환경원예학과) ;
  • 양은영 (서울시립대학교 환경원예학과) ;
  • 박금순 (서울시립대학교 환경원예학과) ;
  • 이용범 (서울시립대학교 환경원예학과) ;
  • 배종향 (원광대학교 식물자원과학부) ;
  • 전경수 (원광대학교 생물환경과학부(생명자원과학연구소))
  • Published : 2004.12.01

Abstract

The experiment was conducted to investigate the effect of EC and pH of nutrient solution on the growth and quality of the single-stemmed rose grown in a rose factory installed with hydroponic system. The growth and quality of the single-stemmed rose were not significantly different from each other with the EC of the nutrient solutions $1.0\~3.5dS{\cdot}m^{-1}$, which resulted in concluding high concentration of the nutrient solution was not necessary. The optimum range of the EC for single-stemmed rose was $1.5\~2.0dS{\cdot}m^{-1}$ considering plant growth, photosynthetic and transpiration rates. The optimum range of the pH for good plant growth without any visible physiological disorder was $4.0\~6.0$. Therefore, to keep the pH of the nutrient solution for rose low compared to other plants was beneficial for plant growth and uptake of the mineral ions.

본 실험은 장미 식물생산공장식 수경재배시 배양액의 EC와 pH와 같은 지하부 환경요인이 장미의 생육과 품질에 미치는 영향을 알아보고자 수행하였다. 배양액의 EC를 $1.0\~3.5dS{\cdot}m^{-1}$로 처리하였을 때 장미의 생육과 품질에 미치는 영향은 큰 차이가 없어 비료의 사용량을 고려하여 배양액의 농도를 높게 관리할 필요가 없는 것으로 나타났다. 광합성률, 증산률 및 생육 등은 $EC\;1.0\~1.5dS{\cdot}m^{-1}$에서 높아 single-stemmed rose수경재배에 있어 최적의 농도임을 알 수 있었다. 배양액의 pH는 pH 3.0과 7.0을 제외한 $pH\;4.0\~6.0$에서 광합성률과 증산률이 높게 나타나 장미는 배양액의 pH를 다른 작물에 비해 낮게 관리하는 것이 생육이나 무기이온 흡수에 있어 효과적인 것으로 나타났다.

Keywords

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