Simulation of Maize Growth Under the Applications of Brackish Water in Northwest China
The objective of this study is to assess the suitability of the AquaCrop model for growing maize using brackish water irrigation in Northwest China. Additionally, this study aims to examine how maize utilizes water in various soil layers when irrigated with varying water qualities. The AquaCrop mode...
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MDPI AG
2024-08-01
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| author | Changfu Tong Rui He Jun Wang Hexiang Zheng |
| author_facet | Changfu Tong Rui He Jun Wang Hexiang Zheng |
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| description | The objective of this study is to assess the suitability of the AquaCrop model for growing maize using brackish water irrigation in Northwest China. Additionally, this study aims to examine how maize utilizes water in various soil layers when irrigated with varying water qualities. The AquaCrop model was calibrated and verified using experimental data from the years 2022 and 2023 in this research. (1) The findings indicated that the AquaCrop model effectively simulated the canopy cover, biomass, and yield of maize when irrigated with brackish water. The validation year’s R<sup>2</sup>, MAPE, and RMSE values for canopy cover, biomass, and yield of maize were 0.95, 5.36%, and 4.77%, respectively. For biomass, the R<sup>2</sup>, MAPE, and RMSE values were 0.91, 16.61%, and 2.12 t·hm<sup>−2</sup>, respectively. For yield, the R<sup>2</sup>, MAPE, and RMSE values were 0.84, 3.62%, and 0.42 t·hm<sup>−2</sup>, respectively. (2) Irrigation with water of high mineral content, measured at 1.6 ds/m, as well as with fresh water over the whole reproductive period, resulted in an increased reliance on groundwater for maize cultivation. There was no notable disparity in the usage of various soil layers between the irrigation with alternating freshwater and brackish water. (3) The AquaCrop model simulated the effects of seven different irrigation water quality treatments. It was shown that using water with mineralization levels of 0.5 and 0.8 ds/m resulted in decreased freshwater use without causing a substantial decrease in maize yield and biomass. |
| format | Article |
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| spelling | doaj-art-c78f229666a14cbda934dcb05ecae6ac2025-08-20T01:56:02ZengMDPI AGAgronomy2073-43952024-08-01149191110.3390/agronomy14091911Simulation of Maize Growth Under the Applications of Brackish Water in Northwest ChinaChangfu Tong0Rui He1Jun Wang2Hexiang Zheng3Institute of Water Resources in Pastoral Areas, Ministry of Water Resources, Huhhot 010020, ChinaInstitute of Water Resources in Pastoral Areas, Ministry of Water Resources, Huhhot 010020, ChinaInstitute of Water Resources in Pastoral Areas, Ministry of Water Resources, Huhhot 010020, ChinaInstitute of Water Resources in Pastoral Areas, Ministry of Water Resources, Huhhot 010020, ChinaThe objective of this study is to assess the suitability of the AquaCrop model for growing maize using brackish water irrigation in Northwest China. Additionally, this study aims to examine how maize utilizes water in various soil layers when irrigated with varying water qualities. The AquaCrop model was calibrated and verified using experimental data from the years 2022 and 2023 in this research. (1) The findings indicated that the AquaCrop model effectively simulated the canopy cover, biomass, and yield of maize when irrigated with brackish water. The validation year’s R<sup>2</sup>, MAPE, and RMSE values for canopy cover, biomass, and yield of maize were 0.95, 5.36%, and 4.77%, respectively. For biomass, the R<sup>2</sup>, MAPE, and RMSE values were 0.91, 16.61%, and 2.12 t·hm<sup>−2</sup>, respectively. For yield, the R<sup>2</sup>, MAPE, and RMSE values were 0.84, 3.62%, and 0.42 t·hm<sup>−2</sup>, respectively. (2) Irrigation with water of high mineral content, measured at 1.6 ds/m, as well as with fresh water over the whole reproductive period, resulted in an increased reliance on groundwater for maize cultivation. There was no notable disparity in the usage of various soil layers between the irrigation with alternating freshwater and brackish water. (3) The AquaCrop model simulated the effects of seven different irrigation water quality treatments. It was shown that using water with mineralization levels of 0.5 and 0.8 ds/m resulted in decreased freshwater use without causing a substantial decrease in maize yield and biomass.https://www.mdpi.com/2073-4395/14/9/1911AquaCrop modelhydroxide isotopesmaizeyieldbrackish water |
| spellingShingle | Changfu Tong Rui He Jun Wang Hexiang Zheng Simulation of Maize Growth Under the Applications of Brackish Water in Northwest China Agronomy AquaCrop model hydroxide isotopes maize yield brackish water |
| title | Simulation of Maize Growth Under the Applications of Brackish Water in Northwest China |
| title_full | Simulation of Maize Growth Under the Applications of Brackish Water in Northwest China |
| title_fullStr | Simulation of Maize Growth Under the Applications of Brackish Water in Northwest China |
| title_full_unstemmed | Simulation of Maize Growth Under the Applications of Brackish Water in Northwest China |
| title_short | Simulation of Maize Growth Under the Applications of Brackish Water in Northwest China |
| title_sort | simulation of maize growth under the applications of brackish water in northwest china |
| topic | AquaCrop model hydroxide isotopes maize yield brackish water |
| url | https://www.mdpi.com/2073-4395/14/9/1911 |
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