한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제50권2호
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  • Pages.3-10
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  • 2008
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  • 1738-3692(pISSN)
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  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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RICEWQ 모형의 보정 및 민감도 분석

Calibration and Sensitivity Analysis of the RICEWQ Model

  • Chung, Sang-Ok (Kyungpook National University, College of Agricultural Life Science) ;
  • Park, Ki-Jung (Rural Research Institute) ;
  • Son, Seung-Ho (Kyungpook National University, College of Agricultural Life Science)
  • 발행 : 2008.03.31
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초록

The main objectives of this study are to calibrate the RICEWQ model with Korean field data and then analyse the sensitivity of the parameters to identify sensitive parameters. The RICEWQ is widely used to predict pesticide fate in a paddy plot. An experimental paddy plot of 0.2 ha($100{\times}20\;m$) at Seobyeon-dong, Daegu, Korea was selected, and field observations for water and pesticide balance were performed from 4 June to 2 September 2006. The molinate, which is a herbicide widely used for weed control in rice culture, was selected. The RICEWQ model was successfully calibrated both for the water and pesticide mass balance. The calibrated model showed a RMSE of 0.537 cm for ponded water depths and a RMSE of 0.036 mg/L for the molinate concentrations in the ponded water. The most sensitive parameters for molinate concentrations in ponded water were the metabolism degradation rate in water, volatilization coefficient, and release rate for slow release formulation. In contrast, the RICEWQ model was not sensitive to parameters such as hydrolysis degradation rate in water and degradation rate in unsaturated soil.

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참고문헌

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피인용 문헌

  1. Estimation of Runoff Ratios of Pesticide Residue from Paddy Fields Using the RICEWQ Model vol.65, 2016, https://doi.org/10.1002/ird.2057