Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Surface Drainage Simulation Model for Irrigation Districts Composed of Paddy and Protected Cultivation

복합영농 관개지구의 배수량 모의 모형의 개발

  • 송정헌 (서울대학교 농업생명과학대학 생태조경.지역시스템공학부) ;
  • 강문성 (서울대학교 농업생명과학대학 조경.지역시스템공학부, 농업생명과학연구원) ;
  • 송인홍 (서울대학교 농업생명과학연구원) ;
  • 황순호 (서울대학교 농업생명과학대학 생태조경.지역시스템공학부) ;
  • 박지훈 (서울대학교 농업생명과학대학 생태조경.지역시스템공학부) ;
  • 안지현 (서울대학교 농업생명과학대학 생태조경.지역시스템공학부)
  • Received : 2013.03.07
  • Accepted : 2013.05.03
  • Published : 2013.05.31
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Abstract

The objectives of this study were to develop a hydrologic simulation model to estimate surface drainage for irrigation districts consisting of paddy and protected cultivation, and to evaluate the applicability of the developed model. The model consists of three sub-models; agricultural supply, paddy block drainage, and protected cultivation runoff. The model simulates daily total drainage as the sum of paddy field drainage, irrigation canal drainage, and protected cultivation runoff at the outlets of the irrigation districts. The agricultural supply sub-model was formulated considering crop water requirement for growing seasons and agricultural water management loss. Agricultural supply was calculated for use as input data for the paddy block sub-model. The paddy block drainage sub-model simulates paddy field drainage based on water balance, and irrigation canal drainage as a fraction of agricultural supply. Protected cultivation runoff is calculated based on NRCS (Natural Resources Conservation Service) curve number method. The Idong reservoir irrigation district was selected for surface drainage monitoring and model verification. The parameters of model were calibrated using a trial and error technique, and validated with the measured data from the study site. The model can be a useful tool to estimate surface drainage for irrigated districts consisting of paddy and protected cultivation.

Keywords

References

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