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논문 상세정보

담수직파재배 논벼의 기준작물 잠재증발산량 산정방법별 작물계수의 변화

Variation of Crop Coefficient With Respect to the Reference Crop Evapotranspiration Estimation Methods in Ponded Direct Seeding Paddy Rice

Abstract

In order to provide basic information for the estimation of evapotranspiration in the ponded direct seeding paddy field, both field lysimeter experiment and model prediction were performed to estimate daily ET. Various methods were used to predict daily reference crop ET and crop coefficients. Measure4 mean daily ET during the 1995 growing season varied from 5.9 to 6.1 mm depending on the species, while it varied from 5.1 to 5.5 mm in 1996. Model predicted mean daily ET during the 1995 growing season varied from 3.9 to 4.9 mm depending on the prediction model, while it varied from 3.5 to 4.7 mm in 1996. The smaller ET values both measured and predicted in 1996 were caused by the low values of temperature, sunshine hours, and solar radiation. Crop coefficients varied from 1.20 to 1.50 in 1995 depending on the prediction model, while it varied from 1.10 to 1.47 in 1996. Comparison of the seven reference crop ET prediction methods used in this study shows that the Penman-Monteith method and the FAO-Radiation method gave the lowest ET while the corrected Penman method and the Hargreaves method gave the largest ET. Since crop coefficients vary to a large extent based on the prediction methods, reference crop ET prediction method should be carefully selected in irrigation planning.

저자의 다른 논문

참고문헌 (19)

  1. 농림부;농어촌진흥공사 , 영농방식 변화에 따른 필요수량 변화연구(I) / v.,pp.214, 1995
  2. Agricultural benefits for Senegal river basin , Haragreaves,G.L.;Haragreaves,G.H.;Riely,J.P. , Journal of Irrigation and Drainage Engineering, ASCE / v.111,pp.113-124, 1985
  3. New evapotranspiration crop coefficients , Wright,J.L. , Journal of Irrigation and Drainage Division, ASCE / v.108,pp.57-74, 1982
  4. Peak water requirements of crops in Southern Idaho , Wright,J.L.;Jensen,M.E. , Journal of Irrigation and Drainage Division, ASCE / v.96,pp.193-201, 1972
  5. A Penman for all seasons , Allen,R.G. , Journal of Irrigation and Drainage Engineering / v.112,pp.348-368, 1986
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  7. Vegetation and hydrology , Perman,H.L. , Tech. Comm. Commonwealth Bureau of Soils / v.,pp.125, 1963
  8. Operational estimates of reference evapotranspiration , Allen,R.G.;Jensen,M.E.;Wright,J.L.;Burman,R.D. , Agronomy Journal / v.81,pp.650-662, 1989
  9. FAO-24 reference evapotranspiration factors , Allen,R.G.;Pruitt,W.O. , Journal of Irrigation and Drainage Engineering / v.117,pp.758-773, 1992
  10. An update for the definition of reference evapotranspiration , Allen,R.G.;Smith,M.;Perrier,A.;Pereira,L.S. , ICID Bulletin / v.4,pp.1-34, 1994
  11. 농림부;농어촌진흥공사 , 영농방식 변화에 따른 필요수량 변화연구(II) / v.,pp.288, 1996
  12. An update for the calculation of reference evapotranspiration , Allen,R.G.;Smith,M.;Pereira,L.S.;Perrier,A. , ICID Bulletin / v.4,pp.35-92, 1994
  13. Guidelines for predicting crop water requirement , Doorenbos,J.;Pruitt,W.O. , Irrigation and Drainage Paper No. 24 / v.,pp.156, 1977
  14. Utah State University , REF-ET : Reference evapotranspiration calcultion software / v.,pp.40, 1991
  15. New evapotranspiration crop coefficients , Wright,J.L. , Journal of Irrigation and Drainage Division, ASCE / v.108,pp.57-74, 1982
  16. 농업진흥공사 , 소비수량산정방법 실용화 연구 / v.,pp.184, 1989
  17. 벼의 직파재배와 물관리대책 , 강인식 , 농지개량 / v.,pp.40-43, 1995
  18. Prospect of large-sized paddy field using direct seeding supported by subsurface irrigation system , Murugaboopathi,C.;Tomita,M.;Yamaji,E.;Koide,S. , Transactions of the ASAE / v.34,pp.2040-2046, 1991
  19. Reference crop evapotranspiration from temperature , Haragreaves,G.H.;Samani,Z.A. , Applied Engineering in Agriculture / v.1,pp.96-99, 1985

이 논문을 인용한 문헌 (1)

  1. 1998. "Computation of Reference Crop Evapotranspiration for Irrigation Scheduling" 한국농공학회지 = Journal of the Korean Society of Agricultural Engineers, 40(1): 43~48 

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