Effect of LED Light Sources and Their Installation Method on the Growth of Strawberry Plants

Ji Eun Lee; Yong Seub Shin; Joung Do Cheung; Han Woo Do; Young Hwa Kang

doi:10.12791/KSBEC.2015.24.2.106

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2015 Vol.24, Issue 2 Preview Page Next Page

Effect of LED Light Sources and Their Installation Method on the Growth of Strawberry Plants LED 광원 및 설치조건에 따른 딸기의 생육 변화

30 April 2015. pp. 106-112

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Abstract

The objective of this study was to examine the growth reaction of strawberry plants to the mixed red and blue LED sources and their installation method. The artificial light sources were : LED PAR(PPFD 2~4µmol·m^-2·s^-1), LED BAR(PPFD 100~120µmol·m^-2·s^-1) and incandescent(PPFD 2~4µmol·m^-2·s^-1) lamp. The lighting treatment was started at the first cluster flowering period as a night breaking lighting and was applied during 3 hours, between 22:00 and 01:00 every day. Plant height and leafstalk length were longer in plants treated with incandescent lamp, where as fresh and dry weight of shoot were heavier in LED PAR compared to incandescent lamp treatment. LED PAR treatment also resulted in the largest leaf area, chlorophyll content was increased by 0.36mg·g^-1 after 60 days from the starting of the artificial lighting. According to the experimental results application of 16W LED PAR lamps and W-type installation method can improve light environment in strawberry lighting culture.

Keywords

illumination condition

LED

lighting culture

strawberry

딸기의 전조재배에 적합한 인공광원을 모색하기 위해 적 색과 청색의 LED를 이용하여 설치조건을 검토하였다. 시 험에 사용된 인공광원은 LED PAR(PPFD 2~4µmol·m^-2·s^-1), LED BAR(PPFD 100~120µmol·m^-2·s^-1), 백열등(PPFD 2~4µmol·m^-2·s^-1)이고 전조시기는 정화방이 개화하는 시점 에 22시~01시까지 3시간동안 연속조명하였다. 무처리보 다는 전조처리구가 초장과 엽병장이 길었으며, 그 중 백 열등이 가장 많이 생장하였다. 전조처리구에서 지상부의 생체중과 건물중은 LED PAR 처리구에서 생장량 대비 가장 무거웠다. 지상부의 엽면적 생장량에서는 무처리 보다는 전조처리구가 엽면적이 증대하는 경향이었고, LED PAR 처리가 엽면적이 넓었다. 엽록소 함량은 전조 후 60일 경에는 LED PAR를 제외하고는 모두 감소하는 경향이었다. 광원별로 광 환경을 시뮬레이션한 결과, 100W 백열등 배광곡선이 원형에 가까워 전조재배시 하 우스 위쪽으로 많이 발광되는 것을 볼 수 있다. LED PAR 타입을 설치했을 때는 직진성이 강한 LED의 특성 상 조명의 중심이 40lux 이상이며 좁은 지향각과 낮은 설치 위치로 인해 좁은 지역에 집광되는 현상이 나타나 고 조명과 조명사이에 기준조도 이하의 음영지역이 발생 하였다. 따라서 설치 높이는 2m, 설치 간격은 3.75m로 조절하였고, 배치형태는 W타입으로 변경하여 전체 식물 에 1.2µmol·m^-2·s^-1 이상이 조사될 수 있도록 기준 조도 와 균제도를 맞추어 최적화

키워드

딸기

전조재배

조명조건

LED

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Information

Publisher :The Korean Society for Bio-Environment Control
Publisher(Ko) :(사)한국생물환경조절학회
Journal Title :Protected Horticulture and Plant Factory
Journal Title(Ko) :시설원예ㆍ식물공장
Volume : 24
No :2
Pages :106-112
Received Date : 2015-04-15
Revised Date : 2015-05-08
Accepted Date : 2015-05-27
DOI :https://doi.org/10.12791/KSBEC.2015.24.2.106

Journal of Bio-Environment Control ISSN:1229-4675(Print) 2765-3641(Online) 생물환경조절학회지

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Literature Cited