Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Optimum Irrigation Interval for the Growth of Phalaenopsis Hybrid Seedling in the Aeroponic System

분무경 시스템에서 팔레놉시스 유묘 생육에 적합한 분무간격

  • Lee, Dong-Soo (Floriculture Research Division, National Institute of Horticultural & Herbal Science) ;
  • Kwon, Oh-Keun (Floriculture Research Division, National Institute of Horticultural & Herbal Science) ;
  • Lee, Yong-Beom (Department of Environmental Horticulture, University of Seoul) ;
  • Yae, Byeong-Woo (Floriculture Research Division, National Institute of Horticultural & Herbal Science) ;
  • Lee, Young-Ran (Floriculture Research Division, National Institute of Horticultural & Herbal Science)
  • 이동수 (농촌진흥청 국립원예특작과학원 화훼과) ;
  • 권오근 (농촌진흥청 국립원예특작과학원 화훼과) ;
  • 이용범 (서울시립대학교 환경원예학과) ;
  • 예병우 (농촌진흥청 국립원예특작과학원 화훼과) ;
  • 이영란 (농촌진흥청 국립원예특작과학원 화훼과)
  • Received : 2010.11.01
  • Accepted : 2010.12.20
  • Published : 2010.12.31
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Abstract

The irrigation interval and time for the supply of nutrient and water to the plant is important in the aeroponic system. This study was conducted to investigate the effect of irrigation interval on the growth of Phalaenopsis hybrid seedlings in the aeroponic system. Young bare-root plants (four leaves, 16 g in fresh weight) were used for this experiment. The composition of nutrient solution was, in $me{\cdot}L^{-1}$, 9 N, 3 P, 4 K, 4 Ca and 2 Mg. The electrical conductivity (EC) and pH of nutrient solution used was $1.2\;dS{\cdot}m^{-1}$ and 5.8, respectively. Irrigation intervals were 10, 20, 30, 40, and 50 minute and each irrigation time was 10 minute. The total fresh and dry weight, the number of branched roots, and relative growth rate at the 20 and 30 min. was greater than 10, 40, 50 min. interval. Especially, the fresh weight of roots at 30 min. interval was the highest. Leaf length was the highest at 30 min. interval but there was no difference in leaf width. The amount of water consumed for a month was 0.71 L per plant and it was reduced with increasing irrigation interval. There was no difference in the amount of consumed mineral contents for 15 days except for potassium. Potassium absorbed was the highest at 30 min. irrigation interval. As a result, the optimum irrigation interval was 30 min for the production of Phalaenopsis hybrid seedlings in the aeroponic system.

분무경시스템에서 분무간격과 분무시간은 식물의 생육어l 필요한 양분과 수분을 공급하기 위한 중요한 요소들이다. 이 실험은 분무경에서 분무간격이 팔레놉시스 유묘의 생육에 미치는 영향에 대하여 알아보고자 수행되었다. 배지 없이 뿌리가 나출된 생체중 16g 크기의 유묘를 사용하였다. 분무간격은 각각 10, 20, 30, 40, 50분 간격이었으며, 분무시간은 10분이었다. 총생체중, 총건물중, 분지된 뿌리수와 상대생장률은 20분과 30분 간격에서 10분, 40분, 50분 간격보다 높았다. 특히, 뿌리의 생체중은 30분 간격에서 기장 높았다. 엽장은 30분 간격에서 길었으나, 엽폭은 처리간 차이가 없었다. 10분 간격 처리에서 유묘 한 개체가 30일간 소비한 물량은 0.71L였으며, 분무간격이 증가함에 따라 그 양은 감소하였다. 15일간 소비된 양분은 칼륨이외에는 처리간 차이가 없었으며, 칼륨은 30분 간격에서 가장 많이 흡수되었다. 결과를 요약하면, 분무경 시스템에서 팔레놉시스 유묘 생산을 위한 적정 분무간격은 30분이었다.

Keywords

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