Effect of Alternate Sprinkler Irrigation with Saline and Fresh Water on Soil Water-Salt Transport and Corn Growth

文献类型： 外文期刊

第一作者： Jiang, Yue

作者： Jiang, Yue;Wang, Luya;Xue, Run;Jiang, Yue;Li, Yanfeng;Li, Hao

作者机构：

关键词： corn; low-saline water irrigation; soil; sprinkler irrigation; salt ions; salt accumulation

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

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年卷期： 2025 年 15 卷 8 期

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收录情况： SCI

摘要： To address freshwater scarcity and the underutilization of low-saline water in the North China Plain, a field study was conducted to evaluate the effects of alternating sprinkler irrigation using saline and fresh water on soil water-salt dynamics and corn growth. Two salinity levels (3 and 5 gL-1, representing S1 and S2, respectively) and three irrigation strategies-saline-fresh-saline-fresh (F1), saline-fresh (F2), and mixed saline-fresh (F3)-were tested, resulting in six treatments: S1F1, S1F2, S1F3, S2F1, S2F2, and S2F3. S1F1 significantly improved soil water retention at a 30-50 cm depth and reduced surface electrical conductivity (EC) and Na+ concentration (p < 0.05). S1F1 also promoted more uniform Mg2+ distribution and limited Ca2+ loss. Under high salinity (5 gL-1), surface salt accumulation and ion concentration (Na+, Mg2+, and Ca2+) increased, particularly in S2F3. Corn growth under alternating irrigation (F1/F2) outperformed the mixed mode (F3), with S1F1 achieving the highest plant height, leaf area, grain number, and 100-grain weight. The S1F1 yield surpassed others by 0.4-3.0% and maintained a better ion balance. These results suggest that alternating irrigation with low-salinity water (S1F1) effectively regulates root-zone salinity and improves crop productivity, offering a practical strategy for the sustainable use of low-saline water resources.

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