한국농림기상학회지, 제 11권 제3호(2009) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 11, No. 3, (2009), pp. 111~117
DOI: 10.5532/KJAFM.2009.11.3.111
ⓒ Author(s) 2014. CC Attribution 3.0 License.


FAO Penman-Monteith 공식을 이용한 수원지역
포도 수체 증발산량 예측

윤석규(1), 허승오(2), 김승희(1), 박서준(1), 김정배(1), 최인명(1)
(1)국립원예특작과학원 과수과, (2)국립농업과학원 토양비료관리과

(2009년 07월 08일 접수; 2009년 08월 24일 수정; 2009년 09월 23일 수락)

Prediction of Evapotranspiration from Grape Vines in Suwon with the
FAO Penman-Monteith Equation

Seok-Kyu Yun(1), Seung-Oh Hur(2), Seung-Heui Kim(1), Seo-Jun Park(1),
Jeong-Bae Kim(1), In-Myung Choi(1)
(1)Fruit Research Division, National Institute of Horticultural & Herbal Science, RDA, Suwon 441-706, Korea
(2)Soil and Fertilizer Management Division, National Academy of Agricultural Science, RDA, Suwon 441-706, Korea

(Received July 08, 2009; Revised August 24, 2009; Accepted September 23, 2009)

ABSTRACT
Food and Agricultural Organization (FAO) Penman-Monteith (PM) equation is one of the most widely used equations for predicting evapotranspiration (ET) of crops. The ET rate and the base crop coefficients (Kcb) of the two different grape vines (i.e., Campbell Early and Kyoho) cultivated in Suwon were calculated by using the FAO PM equation. The ET rate of Campbell Early was 2.41 mm day-1 and that of Kyoho was 2.22 mm day-1 in August when the leaf area index was 2.2. During this period, the Kcb of Campbell Early based on the FAO PM equation was on average 0.49 with the maximum value of 0.72. On the other hand, the Kcb of Kyoho was averaged to be 0.45 with the maximum value of 0.64. The seasonal leaf area index for two grape cultivars was measured as 0.15 in April, 0.5 in May, 1.4 in June, 2.2 in July-September, and 1.5 in October. The Kcb of Campbell Early showed a seasonal variation, changing from 0.03 in April to 0.11 in May, 0.31 in June, 0.49 in July-September, and 0.33 in October. The magnitudes and the seasonality of Kcb of Kyoho were similar to those of Campbell Early.

Keyword: Evapotranspiration, Crop coefficient, Grape, FAO Penman-Monteith equation

MAIN

적요

포도 증발산량 예측에 FAO PM 공식을 활용하고자, 수원지역에 포도 수체 증발산량을 측정하고 포도 기본작물계수(Kcb)를 산정하였다. 수원지역에서 엽면적 지수가 2.2로 가장 높은 시기인 8월에 포도 증발산량을 조사한 결과, 캠벨얼리는 평균 2.41mm day−1, 최고 2.68mm day−1이고 거봉은 평균 2.22mm day−1, 최고 2.55mm day−1 이었다. 포도 증발산량 측정값과 FAOPM 기준증발산량 계산값을 이용하여 포도 기본작물계수(Kcb)를 산정한 결과, 포도 엽면적 지수가 2.2인 시기에 캠벨얼리에서는 평균 0.49, 최고 0.72이고 거봉에서는 평균 0.45, 최고 0.64로 산정되었다. 수원지역에서 포도 캠벨얼리와 거봉의 시기별 엽면적 지수를 조사한 결과, 4월은 0.15, 5월은 0.5, 6월은 1.4, 7월부터 9월까지 2.2, 10월은 1.5인 것으로 조사되었으며, 포도 엽면적 지수를 이용하여 포도 시기별 기본작물계수를 산정한 결과, 캠벨얼리의 경우에 4월은 0.03, 5월은 0.11, 6월은 0.31, 7, 8, 9월은 0.49, 10월은 0.33으로 산정되었으며 거봉의 경우에도 그 크기와 계절변화가 크게 다르지 않았다. 포도 시기별 증발산량은 포도 기본작물계수에 FAO PM 공식으로 기준증발산량 계산값을 곱하여 계산된다. 따라서 본 연구에서 산정된 포도 생육시기별 기본작물계수는 포도 생육시 기별 증발산량을 보다 정확하게 계산하는데 유용하게 이용할 수 있을 것으로 기대된다.

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