Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Variance of Paddy Water Demand Depending on Rice Transplanting Period and Ponding Depth

이앙시기 및 담수심 변화에 따른 논벼 수요량 변화 분석

  • Cho, Gun-Ho (Department of Agricultural Civil Engineering, Kyungpook National University) ;
  • Choi, Kyung-Sook (Department of Agricultural Civil Engineering, Kyungpook National University)
  • Received : 2021.04.02
  • Accepted : 2021.04.27
  • Published : 2021.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

This study evaluated variations in the paddy rice water demand based on the continuous changing in rice transplanting period and ponding depth at the four study paddy fields, which represent typical rice producing regions in Korea. Total 7 scenarios on rice transplanting periods were applied while minimum ponding depth of 0 and 20 mm were applied in accordance with maximum ponding depth ranging from 40 mm to 100 mm with 20 mm interval. The weather data from 2013 to 2019 was also considered. The results indicated that the highest rice water demand occurred at high temperature and low rainfall region. Increased rice transplanting periods showed higher rice water demand. The rice water demand for 51 transplanting days closely matched with the actual irrigation water supply. In case of ponding depth, the results showed that the minimum ponding depth had a proportional relationship with rice water demand, while maximum ponding depth showed the contrary results. Minimum ponding depth had a greater impact on rice water demand than the maximum ponding depth. Therefore, these results suggest that increasing the rice transplanting period, which reflects the current practice is desirable for a reliable estimation of rice water demand.

Keywords

Acknowledgement

이 논문은 2019학년도 경북대학교 연구년 교수 연구비에 의하여 연구되었음.

References

  1. Choi, K. J., 2020. Field survey report of paddy rice transplanting periods, Jeonju, Jeonla buk-do: Rural Development Administration (RDA) (in Korean).
  2. Choi, K. S., 2020. Improvement of estimation methodology for the paddy rice water demand, 132. Naju, Jeollanam-do: Korea Rural Community Corporation (KRC) (in Korean).
  3. Chung, S. O., and T. H. Ahn, 2000. Water saving irrigation method in paddy fields. Journal of the Korean Society of Agricultural Engineers 2000(0): 108-113 (in Korean).
  4. Doorenbos, J., and W. O. Pruitt, 1977. Guidelines for predicting crop water requirements. FAO Irrigation and Drainage Paper No. 24.
  5. Kim, J. T., U. J. Joo, K. W. Park, and N. L. Jong, 2005. Estimation of the water requirement with the farming conditions in paddy field. Korea Water Resources Association Conference 1445-1449 (in Korean).
  6. Kim, S., 2001. A study on the techniques for improving water management efficiency, 227-249. Goyang, Gyeonggi: Korea Institute of Construction Technology (KICT) (in Korean).
  7. Kim, S. H., G. H. Cho, and K. S. Choi, 2020. Assessment of paddy rice evapotranspiration estimation methods based on comparisons of agricultural water supply. Korea Water Resources Association Conference 53(12): 1131-1142 (in Korean). doi:10.3741/JKWRA.2020.53.12.1131.
  8. Korea Rural Community Corporation (KRC), 1980. Design criteria of agricultural water development of water requirement paddy field, Naju, Jeollanam-do (in Korean).
  9. Korea Rural Community Corporation (KRC), 1995. A study on the water requirement variation with the farming conditions in paddy field, 144-146. Naju, Jeollanam-do (in Korean).
  10. Lee, T. S., 2012. Analyzing consumptive use of water and yields of paddy rice by climate change scenario and CERES-Rice.MS. diss., Seoul.: Seoul National University (in Korean).
  11. Lee, Y. J., S. J. Kim, P. S. Kim, U. J. Joo, and Y. S. Yang, 2006. Study on the effective calculation method of irrigation water in a paddy fields area. Journal of the Korean Society of Agricultural Engineers 48(3): 11-20 (in Korean). doi:10.5389/KSAE.2006.48.3.011.
  12. Ministry of Agriculture and Forestry (MAF), 1982. Design criteria of land and water development plan for agriculture: Dam, Sejong, Gyeonggi (in Korean).
  13. Ministry of Agriculture and Forestry (MAF), 1998. Design criteria of land and water development plan for agriculture: Irrigation, 102-111. Sejong, Gyeonggi (in Korean).
  14. Nam, W. H., H. J. Kwon, and K. S. Choi, 2018. Reevaluation of design frequency of drought and water supply safety for agricultural reservoirs under changing and farming methods in paddy field. Journal of the Korean Society of Agricultural Engineers 60(1): 121-131 (in Korean). doi:10.5389/KSAE.2018.60.1.121.
  15. Sohn, S. H., and S. O. Chung, 2002. Effects of ponding depth treatment on water balance in paddy fields. Journal of the Korean Society of Agricultural Engineers 44(2): 67-74 (in Korean).
  16. Sohn, S. H., K. J. Park, and S. O. Chung, 2004. Analysis of water balance for ponding depth treatment in paddy fields. Journal of the Korean Society of Agricultural Engineers 46(4): 13-21 (in Korean). doi:10.5389/KSAE.2004.46.4.013.
  17. Yoo, S. H., N. Y. Park , S. H. Lee, Y. G. Oh, and J. Y. Choi, 2012. The impacts of climate change on paddy water demand and unit duty of water using high-resolution climate scenarios. Journal of the Korean Society of Agricultural Engineers 54(2): 15-26 (in Korean). doi:10.5389/KSAE.2012.54.2.015.