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Article

Optimized Main Ditch Water Control for Agriculture in Northern Huaihe River Plain, Anhui Province, China, Using MODFLOW Groundwater Table Simulations

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State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
2
Key Laboratory of Water Conservancy and Water Resources of Anhui Province, Anhui & Huaihe River Institute of Hydraulic Research, Bengbu 233000, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Adriana Bruggeman
Water 2022, 14(1), 29; https://doi.org/10.3390/w14010029
Received: 29 September 2021 / Revised: 21 December 2021 / Accepted: 21 December 2021 / Published: 23 December 2021
Controlled drainage by regulating the groundwater level in open ditches is necessary to ensure the normal growth of crops in Northern Huaihe River Plain, China. The groundwater model MODFLOW was calibrated and validated in a representative area, and was then conducted to simulate the groundwater under different main drainage ditch water depth control schemes during the growth period of corn and wheat. Then the scenario with highest water depth (Scenario 20) from 1989 to 2019 was simulated, and the annual cumulative drought and waterlogging intensity (ACDWI) were analyzed in each decade and in different hydrological years. The results showed that the study area was dominated by drought stress. The lowest level of drought stress was achieved under Scenario 20. The frequency of drought gradually decreased from north to south in the study area. Moreover, the ACDWI decreased with increase of precipitation during 1989 to 2019. The results indicated that it was important to store water during the dry season, while it is also necessary to control the drainage in the rainy season to drain excess water on time. The results suggested that the water depth of the main drainage ditch should be regulated by zoning and by season to alleviate crop drought and waterlogging. View Full-Text
Keywords: controlled drainage; suitable groundwater depth; stress of drought and waterlogging; MODFLOW controlled drainage; suitable groundwater depth; stress of drought and waterlogging; MODFLOW
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MDPI and ACS Style

Tang, R.; Han, X.; Wang, X.; Huang, S.; Yan, Y.; Huang, J.; Shen, T.; Wang, Y.; Liu, J. Optimized Main Ditch Water Control for Agriculture in Northern Huaihe River Plain, Anhui Province, China, Using MODFLOW Groundwater Table Simulations. Water 2022, 14, 29. https://doi.org/10.3390/w14010029

AMA Style

Tang R, Han X, Wang X, Huang S, Yan Y, Huang J, Shen T, Wang Y, Liu J. Optimized Main Ditch Water Control for Agriculture in Northern Huaihe River Plain, Anhui Province, China, Using MODFLOW Groundwater Table Simulations. Water. 2022; 14(1):29. https://doi.org/10.3390/w14010029

Chicago/Turabian Style

Tang, Rong, Xudong Han, Xiugui Wang, Shuang Huang, Yihui Yan, Jiesheng Huang, Tao Shen, Youzhen Wang, and Jia Liu. 2022. "Optimized Main Ditch Water Control for Agriculture in Northern Huaihe River Plain, Anhui Province, China, Using MODFLOW Groundwater Table Simulations" Water 14, no. 1: 29. https://doi.org/10.3390/w14010029

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