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2023 Vol.32, Issue 3 Preview Page

Original Articles

Effect of Shading and Supplemental Lighting for Greenhouse Cultivation of Cucumber in Summer Season

하절기 오이 온실재배 시 차광 및 보광 효과

Jin Yu1
,
Ji Hye Yun1
,
So Yeong Hwang1
,
Eun Won Park1
,
Jeong Hun Hwang1
,
Hyeong Eun Choi1
,
Jeong Kil Koo2
,
Hee Sung Hwang34
,
Seung Jae Hwang567*
유 진1
,
윤 지혜1
,
황 소영1
,
박 은원1
,
황 정훈1
,
최 형은1
,
구 정길2
,
황 희성34
,
황 승재567*
1Graduate Student, Division of Applied Life Science, Graduate School of Gyeongsang National University, Jinju 52828, Korea
2Undergraduated Student, Division of Horticultural Science, College of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Korea
3Graduate Student, Division of Crop Science, Graduate School of Gyeongsang National University, Jinju 52828, Korea
4Graduate Researcher, Institute of Agriculture & Life Sciences, Gyeongsang National University, Jinju 52828, Korea
5Professor, Division of Horticultural Science, College of Agriculture & Life Sciences, Gyeongsang National University, Jinju 52828, Korea
6Professor, Institute of Agriculture & Life Sciences, Gyeongsang National University, Jinju 52828, Korea
7Professor, Research Institute of Life Science, Gyeongsang National University, Jinju 52828, Korea
1경상국립대학교 응용생명과학부 대학원생
2경상국립대학교 농업생명과학대학 원예과학부 학부생
3경상국립대학교 작물생산과학부 대학원생
4경상국립대학교 농업생명과학연구원 연구원
5경상국립대학교 농업생명과학대학 원예과학부 교수
6경상국립대학교 농업생명과학연구원 교수
7경상국립대학교 생명과학연구원 교수
*Corresponding Author
31 July 2023. pp. 226-233
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Abstract

High solar radiation in summer season causes excessive respiration of crops and reduces photosynthesis. In addition, the rainy season, which mainly occurs in summer, causes a low light condition inside the greenhouse. A low light condition can reduce crop growth and yield. This study was conducted to evaluate the effect of shade and supplemental lighting on the growth and yield of cucumber during summer season. Cucumber grafted seedlings were transplanted in two plastic greenhouses on August 30, 2022. To reduce the light intensity inside the greenhouse, a 50% shading screen was installed in one greenhouse. Supplemental lighting was conducted from September 7, 2022 to October 20, 2022. HPS (high-pressure sodium lamp), W LED (white LED, red:green:blue = 5:3:2), and RB LED (combined red and blue LED, red:blue = 7:3) were used for supplemental lighting sources, and non-treated (non-supplemental lighting) was as the control. The supplemental lighting was conducted before sunrise and after sunset for 2 hours with a photosynthetic photon flux density of 150 ± 20 µmol·m-2·s-1. The plant height, leaf length, leaf width, and SPAD value tended to increase in the shading group. RB LED increased stem diameter regardless of shading treatment. Fresh and dry weights of fruits were not significantly different in shading and supplemental lighting. Average fresh weight of fruits was not significantly different among supplemental lighting as the harvest date passed. In conclusion, in this study 50% shade treatment significantly improved the growth of cucumber during the summer season. In addition, the growth and fruit characteristics are better than the control without supplemental lighting. This study can be used as basic research data for applying supplemental lighting technology to cucumber cultivation.

Keywords
fresh weight
high-pressure sodium lamp
low intensity
rainy season
supplemental lighting sources

하절기의 높은 일사량은 작물의 과도한 호흡을 유발하여 광합성을 감소시킨다. 또한 주로 하절기에 발생하는 장마는 온실 내부에 저일조 환경을 유발한다. 저일조 환경은 작물의 생육과 생산량을 감소시키는 원인이 될 수 있다. 본 연구는 하절기 차광과 보광이 오이의 생육과 생산량에 미치는 영향에 대해서 조사하기 위해 수행되었다. 오이 접목묘는 2022년 8월 30일에 플라스틱 온실 2동에 정식하였다. 온실 내부의 광량을 감소시키기 위해 온실 1동에 차광 스크린을 설치하였다. 보광 처리는 2022년 9월 7일부터 2022년 10월 20일까지 수행되었다. 고압나트륨등(high-pressure sodium lamp), 백색 LED(white LED, red:green:blue = 5:3:2), RB LED(combined red and blue LED, red:blue = 7:3)를 보광 광원으로 사용하였고, 무처리를 대조구로 설정하였다. 보광 처리는 일출 전과 일몰 후 2시간씩 수행하였고, 보광 광도는 150±20 μmol·m-2·s-1로 설정하였다. 식물 초장, 엽장, 엽폭, SPAD는 차광 처리에 의해 증가하는 경향을 보였다. RB LED에서는 차광 처리와 관계없이 경경이 유의성 있게 증가되었다. 과실의 생체중과 건물중은 차광과 보광 처리에서 유의미한 차이가 없었다. 과실의 평균 과중은 수확일이 지날수록 보광처리 간의 유의한 차이는 없었다. 결론적으로, 본 연구에서 하절기 오이 재배 시 50% 수준의 차광 처리는 오이의 생육을 유의하게 향상시켰다. 또한, 보광 대조구에서 생육과 과실 특성이 좋았다. 본 연구는 오이 재배 시 보광 기술을 적용하기 위한 기초 연구 자료로 활용될 수 있다.

키워드
고압나트륨등
보광 광원
생체중
장마
저일조
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Journal of Bio-Environment Control
  • Journal Title(Ko) :생물환경조절학회지
  • Volume : 32
  • No :3
  • Pages :226-233
  • Received Date : 2023-06-22
  • Revised Date : 2023-07-20
  • Accepted Date : 2023-07-25
  • DOI :https://doi.org/10.12791/KSBEC.2023.32.3.226
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