Optimal irrigation water salinity enhances tomato(Solanum lycopersicum L.) yield in sand culture by regulating substrate salinity
Effectively utilizing saline water and yellow sand resources is crucial for addressing Xinjiang's two significant agricultural challenges: freshwater scarcity and soil salinization. Integrating water conservation and salt management in this region requires innovative irrigation strategies. In t...
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Elsevier
2025-08-01
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| Series: | Agricultural Water Management |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0378377425003464 |
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| author | Wenge Jiang Zhi Gong Yuhui Yang Zhanming Tan Zhaoyang Li Dongwei Li |
| author_facet | Wenge Jiang Zhi Gong Yuhui Yang Zhanming Tan Zhaoyang Li Dongwei Li |
| author_sort | Wenge Jiang |
| collection | DOAJ |
| description | Effectively utilizing saline water and yellow sand resources is crucial for addressing Xinjiang's two significant agricultural challenges: freshwater scarcity and soil salinization. Integrating water conservation and salt management in this region requires innovative irrigation strategies. In this study, we conducted a controlled greenhouse experiment using tomato plants (Solanum lycopersicum L.) grown in yellow sand, with six irrigation treatments: a groundwater control (CK, salinity 0.80–1 g/L) and five saline water salinity gradients (2–6 g/L). We systematically investigated the effects of different irrigation salinities on the growth and yield of sand-cultured tomatoes. Over two growing seasons, saline water irrigation led to increased substrate water content and salinity. An irrigation salinity of 3 g/L proved optimal, significantly improving root development (root length density increased by 23.21 %; mean root diameter by 26.71 %), which resulted in a 9.76 % increase in dry matter accumulation and a 35.24 % yield improvement compared to the control. In contrast, higher salinity levels (≥4 g/L) inhibited root growth and reduced yield by 34.02 %. Both TOPSIS entropy weighting and principal component analysis identified 3 g/L as the optimal salinity for tomato cultivation. Structural equation modeling (SEM) further revealed that optimal irrigation water salinity enhances tomato yield in sand culture by regulating substrate salinity to promote plant growth, offering a novel theoretical framework for water-land resource sustainable management in arid regions. |
| format | Article |
| id | doaj-art-a4b43e5a324e47b49cb97c33e8448e88 |
| institution | DOAJ |
| issn | 1873-2283 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Agricultural Water Management |
| spelling | doaj-art-a4b43e5a324e47b49cb97c33e8448e882025-08-20T03:09:23ZengElsevierAgricultural Water Management1873-22832025-08-0131710963210.1016/j.agwat.2025.109632Optimal irrigation water salinity enhances tomato(Solanum lycopersicum L.) yield in sand culture by regulating substrate salinityWenge Jiang0Zhi Gong1Yuhui Yang2Zhanming Tan3Zhaoyang Li4Dongwei Li5College of Water Hydraulic and Architectural Engineering, Tarim University, Alar 843300, ChinaCollege of Water Hydraulic and Architectural Engineering, Tarim University, Alar 843300, ChinaCollege of Water Hydraulic and Architectural Engineering, Tarim University, Alar 843300, China; Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, ChinaCollege of Horticulture and Forestry, Tarim University, Alar 843300, ChinaCollege of Water Hydraulic and Architectural Engineering, Tarim University, Alar 843300, China; Institute of Western Agriculture, Chinese Academy of Agricultural Sciences, Changji 831100, China; Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China; Corresponding author at: College of Water Hydraulic and Architectural Engineering, Tarim University, Alar 843300, China.Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China; Institute of Western Agriculture, Chinese Academy of Agricultural Sciences, Changji 831100, China; Corresponding author at: Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453002, China.Effectively utilizing saline water and yellow sand resources is crucial for addressing Xinjiang's two significant agricultural challenges: freshwater scarcity and soil salinization. Integrating water conservation and salt management in this region requires innovative irrigation strategies. In this study, we conducted a controlled greenhouse experiment using tomato plants (Solanum lycopersicum L.) grown in yellow sand, with six irrigation treatments: a groundwater control (CK, salinity 0.80–1 g/L) and five saline water salinity gradients (2–6 g/L). We systematically investigated the effects of different irrigation salinities on the growth and yield of sand-cultured tomatoes. Over two growing seasons, saline water irrigation led to increased substrate water content and salinity. An irrigation salinity of 3 g/L proved optimal, significantly improving root development (root length density increased by 23.21 %; mean root diameter by 26.71 %), which resulted in a 9.76 % increase in dry matter accumulation and a 35.24 % yield improvement compared to the control. In contrast, higher salinity levels (≥4 g/L) inhibited root growth and reduced yield by 34.02 %. Both TOPSIS entropy weighting and principal component analysis identified 3 g/L as the optimal salinity for tomato cultivation. Structural equation modeling (SEM) further revealed that optimal irrigation water salinity enhances tomato yield in sand culture by regulating substrate salinity to promote plant growth, offering a novel theoretical framework for water-land resource sustainable management in arid regions.http://www.sciencedirect.com/science/article/pii/S0378377425003464Growth and yieldSaline water drip irrigationSand-cultured tomatoesStructural equation modelTOPSIS entropy weight method |
| spellingShingle | Wenge Jiang Zhi Gong Yuhui Yang Zhanming Tan Zhaoyang Li Dongwei Li Optimal irrigation water salinity enhances tomato(Solanum lycopersicum L.) yield in sand culture by regulating substrate salinity Agricultural Water Management Growth and yield Saline water drip irrigation Sand-cultured tomatoes Structural equation model TOPSIS entropy weight method |
| title | Optimal irrigation water salinity enhances tomato(Solanum lycopersicum L.) yield in sand culture by regulating substrate salinity |
| title_full | Optimal irrigation water salinity enhances tomato(Solanum lycopersicum L.) yield in sand culture by regulating substrate salinity |
| title_fullStr | Optimal irrigation water salinity enhances tomato(Solanum lycopersicum L.) yield in sand culture by regulating substrate salinity |
| title_full_unstemmed | Optimal irrigation water salinity enhances tomato(Solanum lycopersicum L.) yield in sand culture by regulating substrate salinity |
| title_short | Optimal irrigation water salinity enhances tomato(Solanum lycopersicum L.) yield in sand culture by regulating substrate salinity |
| title_sort | optimal irrigation water salinity enhances tomato solanum lycopersicum l yield in sand culture by regulating substrate salinity |
| topic | Growth and yield Saline water drip irrigation Sand-cultured tomatoes Structural equation model TOPSIS entropy weight method |
| url | http://www.sciencedirect.com/science/article/pii/S0378377425003464 |
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