한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제63권3호
  • /
  • Pages.75-85
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  • 2021
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  • 1738-3692(pISSN)
  • /
  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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이앙시기 및 담수심 변화에 따른 논벼 수요량 변화 분석

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

  • Cho, Gun-Ho (Department of Agricultural Civil Engineering, Kyungpook National University) ;
  • Choi, Kyung-Sook (Department of Agricultural Civil Engineering, Kyungpook National University)
  • 투고 : 2021.04.02
  • 심사 : 2021.04.27
  • 발행 : 2021.05.31
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초록

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.

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과제정보

이 논문은 2019학년도 경북대학교 연구년 교수 연구비에 의하여 연구되었음.

참고문헌

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