Practical application of high‐sodicity wasteland reclamation with flue gas desulfurization gypsum in the Songnen Plain of China

Zhang, Wenchao; Zhang, Wenxin; Zhao, Yonggan; Wang, Shujuan; Liu, Jia; Li, Yan; Zhou, Yuqun; Xu, Lizhen

doi:10.1002/ldr.4412

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…China's Songnen Plain is one of the world's three significant saline-alkali soil concentrated areas, with a salinized area of 3.73 million hm 2 [1]. Soil saline-alkali stress destroys ecological balance and reduces arable productivity, which in turn restricts the development of the local agricultural economy [2]. How to effectively improve soda salt land has become an important issue that urgently needs to be solved [3].…”

Section: Introductionmentioning

confidence: 99%

Decision of Straw Deep Burial and Aluminum Sulfate Drip Irrigation in Soda Saline Soil Based on Grey Relation Analysis and TOPSIS Coupling

Chen,

Yang,

Wen

et al. 2023

Agronomy

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To investigate the impact of combining aluminum sulfate with straw and irrigation water to enhance soil quality in soda saline–alkali soil, in this study a field experiment was conducted in Tongliao City, Inner Mongolia Autonomous Region, China. With beet IM1162 as the indicator crop, four levels of aluminum sulfate dosage (30, 60, 90, 120 g m−2) and four levels of drip irrigation water quota (225, 270, 315, 360 m3 ha−1) were set. The study examined the impact of varying levels of aluminum sulfate and irrigation water on soil water salt and crop yield. Next, using a comprehensive evaluation method, the optimal quantities of aluminum sulfate and irrigation water needed for effective soil improvement were determined. The research findings indicate that the most effective treatment (W2S3) involved an aluminum sulfate dosage of 90 g m−2 and an irrigation quota of 270 m3 ha−1. This treatment resulted in significant improvements compared to the control (CK) group. Specifically, in the 0–50 cm soil layer, the following improvements were observed: the water storage capacity (SWS) increased by 51.7%; evapotranspiration (ET) increased by 16.2%; water use efficiency (WUE) increased by 55.0%; and irrigation water use efficiency (IWUE) increased by 98.1% (p < 0.05). These results emphasize the importance of optimizing the combination of aluminum sulfate dosage and irrigation water quota to improve soil conditions and crop performance. It is worth nothing that this study highlights the potential for enhancing water use efficiency and crop yield in agricultural practices, which can contribute to sustainable and efficient farming practices. The study results revealed significant improvements in soil quality and crop yield when compared to the control group (CK). Specifically, in the 0–50 cm soil layer: the soil salt content decreased by 19.8%, soil pH increased by 8.7%, and exchangeable sodium percentage (ESP) decreased by 34.0%. Moreover, the crop yield in the treatment group increased significantly, by 32.1%. These findings indicate the positive impact of the intervention on soil health and agricultural productivity. The study employed the game theory combination weighting method to comprehensively evaluate soil water, salt, and various yield indicators. The results showed that the sustainability weight for crop yield reached 0.116, emphasizing the aim of soil improvement: the sustainable enhancement of crop yield. This approach underscores the importance of balanced soil management practices to ensure long-term agricultural productivity and environmental sustainability. The comprehensive evaluation results of grey relation analysis and the TOPSIS coupling model showed that the soil improvement effect score was the highest when the dosage of aluminum sulfate was 61.7–120.0 g m−2, and the irrigation quota was 250.4–319.4 m3 ha−1, which was the recommended range for the local area. The research findings discussed in the provided sources contribute to the theoretical basis for soil improvement in soda–saline–alkali land.

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Section: Introductionmentioning

confidence: 99%

Decision of Straw Deep Burial and Aluminum Sulfate Drip Irrigation in Soda Saline Soil Based on Grey Relation Analysis and TOPSIS Coupling

Chen,

Yang,

Wen

et al. 2023

Agronomy

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“…Chemical measures (gypsum, ferrous sulfate, humic acid, sulfur, etc.) achieve a good effect in the short term, but a large amount of material needs to be applied, which may also transform soil sodicity damage into salinity damage (Qadir et al, 2001; Zhang et al, 2022; Zhou et al, 2019). In addition, chemical measures heavily depend on irrigation and drainage operations (Koralegedara et al, 2019; Mao et al, 2016; Zhou et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Water regime enhances the effects of flue gas desulfurization gypsum on the reclamation of highly saline‐sodic soil

Zhang

Zhao

et al. 2022

Land Degrad Dev

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Flue gas desulfurization (FGD) gypsum-based reclamation of saline-sodic soil has been widely used in the Songnen Plain of China, but its reclamation effect depends on the water regime. A pot experiment was conducted to identify the optimal water regimes for reclaiming a highly saline-sodic soil [pH, electrical conductivity (EC) and exchangeable sodium percentage (ESP) were 10.4, 5.5 dS m-1 and 68.1%, respectively] by using FGD gypsum. Three water regimes with drainage times [irrigation amounts of 3-, 5-, and 7-times the soil pore volume (PV)] were selected and FGD gypsum was added to a portion of the regimes before the final drainage operation.Then the saline-sodic parameters of drainage and soil were measured and analyzed. Na + , Cl À , HCO 3 À , and SO 4 2À were the main ions in the drainage of all the treatments.With the increase in drainage times, the water regime without FGD gypsum notably decreased soil EC by 17.8%-52.0%. In contrast to the FGD gypsum treatment, the water regime failed to decrease the soil ESP. FGD gypsum application with three drainage times had optimal reclamation with reductions in soil pH and ESP of 0.5-2.3 units and 5.1%-20.1%, respectivley. But the associated water consumption was more than 40% higher than that of one-or two-drainage operations. In terms of water reduction (irrigation volume was 5 times PV), sodicity reduction and salt removal (soil pH, ESP, and EC were reduced by 1.7 units, 12.3%, and 1.12 dS m À1 ), FGD gypsum application with two-time drainage could be a more suitable measure to reclaim highly saline-sodic soil.

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Mitigating soil salinity stress with titanium gypsum and biochar composite materials: Improvement effects and mechanism

Wang

Tang

et al. 2023

Chemosphere

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Practical application of high‐sodicity wasteland reclamation with flue gas desulfurization gypsum in the Songnen Plain of China

Cited by 5 publications

References 11 publications

Decision of Straw Deep Burial and Aluminum Sulfate Drip Irrigation in Soda Saline Soil Based on Grey Relation Analysis and TOPSIS Coupling

Decision of Straw Deep Burial and Aluminum Sulfate Drip Irrigation in Soda Saline Soil Based on Grey Relation Analysis and TOPSIS Coupling

Water regime enhances the effects of flue gas desulfurization gypsum on the reclamation of highly saline‐sodic soil

Mitigating soil salinity stress with titanium gypsum and biochar composite materials: Improvement effects and mechanism

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