생물환경조절학회지 (Journal of Bio-Environment Control)

  • 제29권1호
  • /
  • Pages.28-35
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  • 2020
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  • 1229-4675(pISSN)
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  • 2765-3641(eISSN)
한국생물환경조절학회 (The Korean Society for Bio-Environment Control)
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토마토 암면 고형배지경에서 급액방식에 따른 급배액량, 생육 및 과실 수량 비교

Comparison of Irrigation and Drainage Volumes, Growth and Fruit Yield under Different Automated Irrigation Methods in Tomato Rockwool Hydroponics

  • 윤범희 (한국방송통신대학교 농학과) ;
  • 조은경 (한국방송통신대학교 농학과) ;
  • 백정현 (한국방송통신대학교 농학과) ;
  • 조일환 ((주)텔로팜) ;
  • 우영회 (한국농수산대학교 원예환경시스템학과) ;
  • 최은영 (한국방송통신대학교 농학과)
  • Yoon, Bumhee (Department of Agricultural Science, Korea National Open University) ;
  • Cho, Eunkyung (Department of Agricultural Science, Korea National Open University) ;
  • Baek, Jeonghyeon (Department of Agricultural Science, Korea National Open University) ;
  • Cho, Ilhwan (Telofarm Inc., Research Park, Seoul National University) ;
  • Woo, Younghoe (Department of Horticulture Environment System, Korea National College of Agriculture and Fisheries) ;
  • Choi, Eunyoung (Department of Agricultural Science, Korea National Open University)
  • 투고 : 2019.09.02
  • 심사 : 2020.01.13
  • 발행 : 2020.01.31
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초록

본 연구는 봄에서 여름 재배기에 토마토를 암면배지 재배에서 누적일사량급액방식(ISR)과 물관수액흐름 속도에 따른 급액방식(SF)에서 급배액량, 수분흡수량, 과실 생육 및 과실 생산량, 과실비대속도를 관찰하였다. 정식 후 28일에서 82일까지 총급액량은 SF 제어구에서 약 5.0L 적게 소비되었으나 지상부와 과실 생체중은 유의차가 없었고 수분이용효율(WUE)과 과실 200g을 생산하는데 소요된 물량도 두처리 간 유의차가 없었다. 정식 후 58일에서 82일까지 급액방식에 따른 실시간 광량과 물관수액흐름속도 상관관계를 관찰하였을 때 상관관계(r2)는 SF제어구에서 더 높게 나타났다. 정식 56일부터 82일까지 실시간 측정된 과경비대속도와 배지함수율의 상관관계를 살펴본 결과 SF제어구에서 야간과 낮 시간대에 ISR제어구 보다 높았고 특히 야간 시간대에 상관관계가 더 높게 나타났다. SF제어구의 물관수액흐름속도와 수분부족분(Humidity Deficit: HD)과의 상관관계(r2=0.6286)도 광량과의 관계만큼 높게 나타났다. 더 많은 현장 연구를 통해 수확량, WUE 및 센서의 정확도과 같은 특성에 관한 결과들을 도출하였을 때 상업적 수경재배 농장 재배자의 관심을 얻을 수 있을 것으로 보인다.

This study is to compare irrigation efficiency between sap flow sensor automated system (SF) and conventional irrigation system based on integrated solar radiation automated system (ISR) in tomato rockwool hydroponics. Total irrigated volumes was higher in the ISR system by 5.0L per plant, a lower drainage rate was found in the SF system, compared to the ISR system. There was no difference in shoot and fruit fresh weights, water use efficiency (WUE) and water amount consumed for producing 200g of tomato fruit. The daily average sap flow density (SFD) was closer to the change of solar irradiance (SI) in the plant grown under the SF system, compared to the ISR system. The correlation coefficient (r2) between the fruit diameter and the volumetric water content during the 56 and 82 days after transplant showed the SF treatment was higher than the ISR at night and daytime, and the correlation was higher at night time. The sap flow density and humidity deficit (HD) of SF treatment was related as closely as the solar irradiance. Further studies should demonstrate that SF irrigation system is a convenient method for hydroponic farmers with advantages, such as growth, higher yield, WUE, and accuracy.

키워드

참고문헌

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