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NTIS 바로가기한국환경농학회지 = Korean journal of environmental agriculture, v.34 no.1, 2015년, pp.38 - 45
허정욱 (농촌진흥청 국립농업과학원 농업공학부) , 김현환 (농촌진흥청 국립농업과학원 농업공학부) , 이광재 (농촌진흥청 국립농업과학원 농업공학부) , 윤정범 (농촌진흥청 국립농업과학원 농업공학부) , 이정관 (충청북도농업기술원 식물공학팀) , 허윤선 (충청북도농업기술원 식물공학팀) , 이기열 (충청북도농업기술원 식물공학팀)
BACKGROUND: For commercial production of greenhouse crops under shorter day length condition, supplementary radiation has been usually achieved by the artificial light source with higher electric consumption such as high-pressure sodium, metal halide, or incandescent lamps. Light-Emitting Diodes (LE...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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인공광을 이용하여 온실내 부족한 광을 인위적으로 보충해주는 보광기술이 필요한 이유는? | 온실과 같은 재배 시설내 구름, 강우 등의 기후변화에 의해 태양광 입사량이 부족해지거나 계절적으로 일장이 짧아지는 시기에는 작물의 광합성과 생장을 촉진시키기 위해서는 인공광을 이용하여 온실내 부족한 광을 인위적으로 보충해주는 보광기술이 필요하다(Albright, 1997; Dorais, 2003;Heo et al., 2010; 2011a; 2011b). | |
보광기술 중에서 삼파장등, 백열등과 같은 인공광원은 어떤 목적으로 사용하는가? | 온실재배 작물의 영양생장 및 생식생장에 영향을 미치는 다양한 환경요인 중에서 광강도와 광질은 보광을 위해 사용하는 인공광원의 영향을 받게 되는데, 온실과 같은 시설에서는 주로 고압나트륨등, 삼파 장등, 백열등이나 메탈할라이드등과 같은 광원을 이용하여 보광하고 있다(Farina and Veruggio, 1996). 이중에서 삼파장등, 백열등 및 고압나트륨등과 같이 비교적 전기에너지 소모량이 많은 인공광원은 우리나라 시설재배지에서 자연일장 연장을 위한 보광 목적보다는 동절기에 광원으로부터의 발열로 인한 시설내부 온도상승을 목적으로 많이 사용한다. 그러나, 일부 작물재배를 제외하고는 전력소모량에 비해 온도상승이나 보광에 의한 생장촉진 효과는 현저하지 않은 것으로 알려져 있다. | |
케일은 어떤 용도로 이용되는 작물인가? | 십자화과에 속하는 케일(Brasicca oleracea L.)은 꽃케일, 쌈케일 및 생즙용 케일 등 종류가 다양하며, 쌈채소, 녹즙용 채소나 샐러드용 채소로 이용되는 작물중 하나이다. 엽병이 굵고 엽장이 15 cm 이상인 케일은 쌈이나 샐러드용 엽채로 이용되기 보다는 주로 녹즙용으로 이용되는 경우가 대부분이다. |
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