Korean Journal of Agricultural and Forest Meteorology (한국농림기상학회지)

Korean Society of Agricultural and Forest Meteorology (한국농림기상학회)
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Preliminary Experiment of the Change of Insolation under Solar Panel Mimic Shading Net

영농형 태양광 하부의 일사량 변화 분석을 위한 모의 차광 관측 실험

  • Yoon, Changyong (Jeollanam-do Agricultural Research & Extension Services) ;
  • Choi, Seonwoong (Department of Applied Plant Science, Chonnam National University) ;
  • An, Kyu-Nam (Jeollanam-do Agricultural Research & Extension Services) ;
  • Ryu, Jae-Hyun (Department of Applied Plant Science, Chonnam National University) ;
  • Jeong, Hoejeong (Department of Applied Plant Science, Chonnam National University) ;
  • Cho, Jaeil (Department of Applied Plant Science, Chonnam National University)
  • 윤창용 (전남농업기술원 식량작물연구소) ;
  • 최선웅 (전남대학교 농업생명과학대학 응용식물학과) ;
  • 안규남 (전남농업기술원 식량작물연구소) ;
  • 류재현 (전남대학교 농업생명과학대학 응용식물학과) ;
  • 정회정 (전남대학교 농업생명과학대학 응용식물학과) ;
  • 조재일 (전남대학교 농업생명과학대학 응용식물학과)
  • Received : 2019.09.23
  • Accepted : 2019.12.04
  • Published : 2019.12.30
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Abstract

An agrivoltaic systems (AVS) is mixed systems associating photovoltaic panels (PVPs) and crop cultivation at the same time on the given land area. It is receiving attention to improve rural economy. However, it is likely that, the crop yield should be decreased due to the reduced absorption of solar radiation by leaves. Thus, before popularizing the AVS, it is necessary to comprehend the degree of shading by PVPs in AVS. In this study, the change of radiation condition under AVS mimic shading net was investigated. The minimum and maximum of difference of photosynthetically active radiation (PAR) between under and outside shading net were 3.03 mol/㎡/day on a cloudy day and 17.08 mol/㎡/day on a sunny day. This difference decreased when the ratio of diffuse irradiance to global irradiance increased. Such a shading effect resulted in the increase of rice height and decrease of rice tillering.

영농형 태양광 발전은 기존 농지에 태양광 패널을 설치하여 농지 보존과 일정 수확량 유지를 전제로 전기 생산도 병행하는 시스템이다. 최근 태양광 부지 수요 충족 및 농촌 경쟁력 제고를 위한 방안으로 주목 받고 있다. 따라서, 본격적인 개발에 앞서 영농형 태양광 패널 하부에서의 경작지 차광 정도를 분석하는 것이 작물 생육·수확량 변동 예측에 반드시 필요할 것이다. 본 실험은 연구용 영농형 태양광 건설에 앞서, 영농형 태양광 시설 규격과 유사한 모의 차광 시설을 설치하고 하부의 광합성유효복사량 특성을 분석하였다. 차광막 하부와 외부의 광합성유효복사량 차이는 일사광에서 산란광 비율이 낮아질수록 증가하였는데, 최대 17.08 mol/㎡/day (맑은 날), 최소 3.03 mol/㎡/day (흐린 날)이었다. 이러한 광 조건 변화는 벼의 초기 생육에 있어 초장의 증가와 주당경수의 감소를 가져왔다.

Keywords

References

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