Simulating water and salt changes in the root zone of salt–alkali fragrant pear and the selection of the optimal surface drip irrigation mode
Faced with the increasingly serious problem of water scarcity, developing precise irrigation strategies for crops in saline alkali land can effectively reduce the negative effects of low water resource utilization. Using a model to simulate the dynamic changes in soil water and salt environment in t...
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Frontiers Media S.A.
2024-12-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2024.1455188/full |
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| author | Yanjie Li Yanjie Li Ping Gong Ping Gong Xinlin He Xinlin He Hongguang Liu Hongguang Liu Zhijie Li Zhijie Li Ling Li Ling Li Chunxia Wang Chunxia Wang Qiang Xu Qiang Xu Quan Chen Jie Wei Ping Lin Xuyong Yu |
| author_facet | Yanjie Li Yanjie Li Ping Gong Ping Gong Xinlin He Xinlin He Hongguang Liu Hongguang Liu Zhijie Li Zhijie Li Ling Li Ling Li Chunxia Wang Chunxia Wang Qiang Xu Qiang Xu Quan Chen Jie Wei Ping Lin Xuyong Yu |
| author_sort | Yanjie Li |
| collection | DOAJ |
| description | Faced with the increasingly serious problem of water scarcity, developing precise irrigation strategies for crops in saline alkali land can effectively reduce the negative effects of low water resource utilization. Using a model to simulate the dynamic changes in soil water and salt environment in the root zone of fragrant pear trees in saline alkali land, and verifying them from a production practice perspective with comprehensive benefits as the goal, can optimize the irrigation amount and irrigation technology elements of saline alkali fruit trees, broaden the comprehensive evaluation perspective of decision-makers, and have important significance for improving the yield and production efficiency of forestry and fruit industry in arid and semi-arid areas worldwide. In this study, a two-year field experiment based on three irrigation levels (3000, 3750, and 4500 m3·ha−1) and four emitter discharge rates (1, 2, 3, and 4 L·h−1) was conducted in Xinjiang, China. The root zone soil water content (SWC) and soil salinity content (SSC) dynamics were simulated during the fertility period of fragrant pear using the numerical model HYDRUS-2D and field data. The results showed that the R2, root mean squared error (RMSE), and Nash–Sutcliffe efficiency coefficient (NSE) of the HYDRUS-2D simulated soil water content (SWC) (soil salinity content SSC) reached 0.89–0.97 (0.91–0.97), 0.02–0.16 cm3·cm-3 (0.22–1.54 g·kg−1), and 0.76–0.95 (0.68–0.96), respectively, indicating the strong performance of the model. A positive correlation was observed between the irrigation amount and soil infiltration depth. Moderately increasing irrigation amount could effectively leach soil salinity at a depth of 80–100 cm and maintain a water and salt environment in the main root zone of 0–80 cm, benefiting the growth and development of the main root system of fragrant pear, as well as the yield and quality of above-ground fruits. The irrigation amount and emitter discharge were optimized and quantified based on multi-objective optimization methods, normalization processing, and spatial analysis methods to maximize yield, fruit weight, soluble solids, and net profits. When the yield, fruit weight, soluble solids, and net profits simultaneously reached 90% of their maximum value, the irrigation amount and emitter discharge ranges were 4274–4297 m3·ha−1 and 3.79–3.88 L·h−1, respectively. Our study provides new insights into regulating soil water and salt environmental factors in the saline fragrant pear root zone and assessing the impact of soil water and salt management under precision irrigation strategies, and profoundly influences decision-making for irrigation of forest fruits in saline arid zones based on a production practice perspective. |
| format | Article |
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| institution | Kabale University |
| issn | 1664-462X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Plant Science |
| spelling | doaj-art-faaf9c75659e41d0b7f256cf2dd838932024-12-11T09:53:46ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2024-12-011510.3389/fpls.2024.14551881455188Simulating water and salt changes in the root zone of salt–alkali fragrant pear and the selection of the optimal surface drip irrigation modeYanjie Li0Yanjie Li1Ping Gong2Ping Gong3Xinlin He4Xinlin He5Hongguang Liu6Hongguang Liu7Zhijie Li8Zhijie Li9Ling Li10Ling Li11Chunxia Wang12Chunxia Wang13Qiang Xu14Qiang Xu15Quan Chen16Jie Wei17Ping Lin18Xuyong Yu19College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, ChinaKey Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Group, Shihezi, ChinaCollege of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, ChinaKey Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Group, Shihezi, ChinaCollege of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, ChinaKey Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Group, Shihezi, ChinaCollege of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, ChinaKey Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Group, Shihezi, ChinaCollege of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, ChinaKey Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Group, Shihezi, ChinaCollege of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, ChinaKey Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Group, Shihezi, ChinaCollege of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, ChinaKey Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Group, Shihezi, ChinaCollege of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi, ChinaKey Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Group, Shihezi, ChinaHydrology and Water Resources Management Center of the Second Division of Xinjiang Production and Construction Corps, Tiemenguan, Xinjiang, ChinaAgricultural Science Research Institute of the Second Division of the Xinjiang Production and Construction Corps, Tiemenguan, Xinjiang, ChinaXinjiang Tianye Co., Ltd., Shihezi, Xinjiang, ChinaHydrology and Water Resources Management Centre of the Eighth Division of Shihezi City, Shihezi, ChinaFaced with the increasingly serious problem of water scarcity, developing precise irrigation strategies for crops in saline alkali land can effectively reduce the negative effects of low water resource utilization. Using a model to simulate the dynamic changes in soil water and salt environment in the root zone of fragrant pear trees in saline alkali land, and verifying them from a production practice perspective with comprehensive benefits as the goal, can optimize the irrigation amount and irrigation technology elements of saline alkali fruit trees, broaden the comprehensive evaluation perspective of decision-makers, and have important significance for improving the yield and production efficiency of forestry and fruit industry in arid and semi-arid areas worldwide. In this study, a two-year field experiment based on three irrigation levels (3000, 3750, and 4500 m3·ha−1) and four emitter discharge rates (1, 2, 3, and 4 L·h−1) was conducted in Xinjiang, China. The root zone soil water content (SWC) and soil salinity content (SSC) dynamics were simulated during the fertility period of fragrant pear using the numerical model HYDRUS-2D and field data. The results showed that the R2, root mean squared error (RMSE), and Nash–Sutcliffe efficiency coefficient (NSE) of the HYDRUS-2D simulated soil water content (SWC) (soil salinity content SSC) reached 0.89–0.97 (0.91–0.97), 0.02–0.16 cm3·cm-3 (0.22–1.54 g·kg−1), and 0.76–0.95 (0.68–0.96), respectively, indicating the strong performance of the model. A positive correlation was observed between the irrigation amount and soil infiltration depth. Moderately increasing irrigation amount could effectively leach soil salinity at a depth of 80–100 cm and maintain a water and salt environment in the main root zone of 0–80 cm, benefiting the growth and development of the main root system of fragrant pear, as well as the yield and quality of above-ground fruits. The irrigation amount and emitter discharge were optimized and quantified based on multi-objective optimization methods, normalization processing, and spatial analysis methods to maximize yield, fruit weight, soluble solids, and net profits. When the yield, fruit weight, soluble solids, and net profits simultaneously reached 90% of their maximum value, the irrigation amount and emitter discharge ranges were 4274–4297 m3·ha−1 and 3.79–3.88 L·h−1, respectively. Our study provides new insights into regulating soil water and salt environmental factors in the saline fragrant pear root zone and assessing the impact of soil water and salt management under precision irrigation strategies, and profoundly influences decision-making for irrigation of forest fruits in saline arid zones based on a production practice perspective.https://www.frontiersin.org/articles/10.3389/fpls.2024.1455188/fullHYDRUS-2Droot zone environmentwater-salt changesmulti-objective optimizationSailt-Alkali fruit trees |
| spellingShingle | Yanjie Li Yanjie Li Ping Gong Ping Gong Xinlin He Xinlin He Hongguang Liu Hongguang Liu Zhijie Li Zhijie Li Ling Li Ling Li Chunxia Wang Chunxia Wang Qiang Xu Qiang Xu Quan Chen Jie Wei Ping Lin Xuyong Yu Simulating water and salt changes in the root zone of salt–alkali fragrant pear and the selection of the optimal surface drip irrigation mode Frontiers in Plant Science HYDRUS-2D root zone environment water-salt changes multi-objective optimization Sailt-Alkali fruit trees |
| title | Simulating water and salt changes in the root zone of salt–alkali fragrant pear and the selection of the optimal surface drip irrigation mode |
| title_full | Simulating water and salt changes in the root zone of salt–alkali fragrant pear and the selection of the optimal surface drip irrigation mode |
| title_fullStr | Simulating water and salt changes in the root zone of salt–alkali fragrant pear and the selection of the optimal surface drip irrigation mode |
| title_full_unstemmed | Simulating water and salt changes in the root zone of salt–alkali fragrant pear and the selection of the optimal surface drip irrigation mode |
| title_short | Simulating water and salt changes in the root zone of salt–alkali fragrant pear and the selection of the optimal surface drip irrigation mode |
| title_sort | simulating water and salt changes in the root zone of salt alkali fragrant pear and the selection of the optimal surface drip irrigation mode |
| topic | HYDRUS-2D root zone environment water-salt changes multi-objective optimization Sailt-Alkali fruit trees |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2024.1455188/full |
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