Korean Journal of Environmental Agriculture (한국환경농학회지)
- Volume 14 Issue 1
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- Pages.1-6
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- 1995
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- 1225-3537(pISSN)
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- 2233-4173(eISSN)
Water Use Efficiency in Rice(Oryza sativa L.) Plant Canopy
벼 군락(群落)의 생육시기별(生育時期別) 물 이용(利用) 효율(效率)에 관(關)한 연구(硏究)
- Kim, Jung-Wook (Rural Development Cooperation) ;
- Lee, Jeong-Taek (Agricultural Science and Technology Institute) ;
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Kang, Byeung-Hoa
(Dept. of Agronomy Korea University) ;
- Yun, Seong-Ho (Agricultural Science and Technology Institute)
- Published : 1995.04.30
Abstract
This experiment was carried out to clarify the evapotranspiration and water use efficiency in rice plant canopy. Two rice cultivars, Daechungbyo(japonica type) and Samgangbyo(Tongil) were planted on the field of Suwon Weather Forecast Station in 1989. Evapotranspiration, dry matter production and leaf area of rice plant were measured to investigate the water use efficiency. There was significant correlation between cumulative evapotranspiration and dry matter production of aboveground. The parameter of linear regression was 4.13. The ratio of cumulative top dry matter production per cumulative evapotranspiration was increased until
1989년(年) 수원(水原) 기상대(氣象臺) 포장(圃場)에서 대청벼와 삼강벼를 공시(供試)하여 증발산량(蒸發散量) 및 벼 건물생산량(乾物生産量)을 측정(測定)하고 증발산량(蒸發散量)의 생육시기별(生育時期別) 변화(變化)와 수분리용(水分利用) 효율(效率)과의 관계(關係)를 검토(檢討)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 누적(累積) 증발산량(蒸發散量)과 지상부(地上部) 건물중생산량(乾物重生産量)은 고도(高度)의 상관(相關)이 있었으며 직선회귀식(直線回歸式)의 기울기는 4.13이었다. 2 . 누적(累積) 증발산량(蒸發散量)에 대한 지상부(地上部) 건물중(乾物重) 비율(比率)은 엽면적지수(葉面積指數)가
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