| Cite this article: | 朱玉朵,庞桂斌,蔡晨阳,等.增氧灌溉与生物炭配施对盐渍土水盐运移与冬小麦产量的影响[J].灌溉排水学报,0,():-. |
| ZHU Yuduo,PANG Guibin,CAI Chenyang,et al.增氧灌溉与生物炭配施对盐渍土水盐运移与冬小麦产量的影响[J].灌溉排水学报,0,():-. |
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| Effects of Oxygenated Irrigation Combined with Biochar Application on Water and Salt Transport in Saline Soil and Yield of Winter Wheat |
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ZHU Yuduo1, PANG Guibin1, CAI Chenyang2,3,4, CONG Xin1, HUANG Qian5, WANG Wei5, WANG Xin5, XU Zhenghe1
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1.School of Water Conservancy and Environment,Jinan University;2.Wanjiang Institute of Technology,Ma'3.'4.anshan;5.Shandong Provincial Academy of Water Sciences
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| Abstract: |
| 【Background】Coastal saline soil represents a significant natural resource in China. However, the accelerated evolution of soil salinization processes, coupled with heightened sensitivity, has emerged as a critical threat. This deterioration severely compromises soil physicochemical properties and hinders crop growth, ultimately impacting agricultural productivity. As salinization intensifies, effective mitigation strategies are urgently required to sustain soil health and ensure food security in vulnerable coastal regions. 【Objective】This study investigated the effects of aerated irrigation combined with biochar amendment on water-salt transport in saline soil and the growth and yield of winter wheat during its entire growth period, aiming to explore optimal cultivation methods for winter wheat under saline soil conditions.【Method】 Outdoor pot experiments were conducted using four treatments: a control (CK, 9.5 mg/L dissolved oxygen, 0 g/kg biochar), aerated irrigation alone (FO, 15.5 mg/L dissolved oxygen, 0 g/kg biochar), biochar amendment alone (FC, 9.5 mg/L dissolved oxygen, 10 g/kg biochar), and combined aerated irrigation with biochar (FOC, 15.5 mg/L dissolved oxygen, 10 g/kg biochar). Soil water-salt transport dynamics and crop growth parameters were analyzed across treatments.【Result】Results showed that FOC treatment significantly enhanced soil moisture content in shallow layers (0–10 cm and 10–20 cm) compared to other treatments, promoting water-salt movement. By the end of the wheat growth cycle, soil salinity in FOC plots decreased to 0.58–1.02 g/kg, effectively transforming mildly salinized soil into non-salinized soil. Winter wheat under FOC exhibited the highest plant height, stem diameter, relative chlorophyll content, leaf area, root biomass, and straw biomass, meeting the crop’s developmental requirements. Yield components, including 100-grain weight and spike grain number, were also maximized in FOC, resulting in a final yield of 120.79 g/pot—an increase of 8.36%, 14.09%, and 21.09% compared to FC, FO, and CK, respectively. All growth and yield indicators followed the order FOC > FC > FO > CK.【Conclusion】The findings indicate that there is a positive interaction between aerated irrigation and biochar amendment, which optimizes the saline soil environment, facilitates winter wheat growth, and enhances grain filling, ultimately improving crop productivity. |
| Key words: aeration irrigation; biochar; saline soil; water and salt movement; winter wheat growth |
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