Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Comparison of Tomato Growth and Yield according to Solar Radiation by Location in Multi-span Greenhouses

연동온실 내 위치별 일사량에 따른 토마토의 생육 및 수량 비교

  • Shin, Hyun Ho (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Choi, Man Kwon (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Ryu, Hee Ryong (R&D Performance Evaluation & Management Division, Research Policy Bureau, RDA) ;
  • Cho, Myeong Whan (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Kim, Jin Hyun (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Seo, Tae Cheol (Protected Horticulture Research Institute, NIHHS, RDA) ;
  • Yu, In Ho (Vegetable Research Division, NIHHS, RDA) ;
  • Kim, Seung Yu (Vegetable Research Division, NIHHS, RDA) ;
  • Lee, Choung Kuen (Protected Horticulture Research Institute, NIHHS, RDA)
  • 신현호 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 최만권 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 류희룡 (농촌진흥청 연구정책국 연구성과관리과) ;
  • 조명환 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 김진현 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 서태철 (농촌진흥청 국립원예특작과학원 시설원예연구소) ;
  • 유인호 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 김승유 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 이충근 (농촌진흥청 국립원예특작과학원 시설원예연구소)
  • Received : 2022.10.07
  • Accepted : 2022.10.31
  • Published : 2022.10.31
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Abstract

To examine the distribution of internal solar radiation within various locations in multi-span greenhouses, the solar radiation, light transmittance, and accumulated radiation at the central and lateral sections were analyzed by dividing 8:30 to 12:30 in the morning and 12:35 to 16:30 in the afternoon. The growth and yield of tomatoes within these sections were also compared. In the morning, the solar radiation of the central section and the side section was 275.2 W·m-2 and 314.9 W·m-2, while in the afternoon, it was 314.9 W·m-2 and 313.9 W·m-2, respectively. The light transmittance and accumulated radiation were also low, confirming the low distribution of solar radiation in the central (connecting) section of the multi-span greenhouses. The growth survey revealed no significant difference. The final yield of tomatoes per plant was 4,828 g in the central section and 4,851 g in the lateral section, but there was no significant difference in the central section compared to the lateral section by 0.5%. However, the amount of solar radiation as per time in the central section is higher than the light compensation point, 60 W·m-2, and slightly lower than the light saturation point of tomatoes, i.e., 281 W·m-2. The results of this study can help in greenhouse design based on the insolation environment.

본 연구에서는 연동온실의 골조로 인한 내부 광 분포를 검토하기 위하여 위치별(중앙부 및 측면부) 일사량을 실측하고, 오전(08:30-12:30)과 오후(12:35-16:30)로 시간대를 구분하여 일사량, 광 투과율 및 일 적산일사량을 분석하였다. 또한 토마토의 생육 및 수확량을 위치별로 비교하였다. 오전일 때 중앙부와 측면부의 일사량은 각각 275.2W·m-2, 314.9W·m-2이고, 오후일 때는 각각 278.1W·m-2, 313.9W·m-2로 측면부보다 중앙부가 오전은 12.6%, 오후는 11.4% 낮았고, 광 투과율과 일 적산일사량도 중앙부가 낮게 나타났다. 생육 특성에 있어서는 첫번째 조사의 엽장과 엽폭을 제외하고는 조사 종료일까지 유의미한 차이가 없었다. 토마토의 최종 주당 평균 수확량은 재배 위치에 따라 중앙부 4,828g, 측면부 4,851g으로 유의미한 차이는 없었고, 중앙부가 0.5% 적게 나타났다. 토마토의 광보상점은 60W·m-2이고 광포화점은 281W·m-2로 중앙부의 시간대별 일사량은 광보상점보다는 높고, 광포화점보다는 낮으나 그 차이가 크지 않아 온실 내 위치에 따른 생육 및 수확량의 차이가 미미한 것으로 판단하였다. 향후 이 검토 결과를 포함하여 온실을 설계할 때 광 환경을 고려한 설계를 위해 온실의 설치 방향, 위치 및 지붕 경사도 등에 따른 온실 내 광 분포 분석이 필요하다.

Keywords

Acknowledgement

본 연구는 농촌진흥청 연구사업(과제번호: PJ015063012022)의 지원에 의해 이루어진 것임.

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