Drylands present a significant challenge to global agricultural production, especially in dryland saline‐sodic soils, which are marked by poor structure and low infiltrability. Enhancing the infiltration capacity of these soils is crucial for enhancing soil health and optimizing land‐use efficiency. However, few studies have been conducted to improve soil physical structure and enhance water infiltration and storage capacity in saline‐sodic soils through agricultural waste. This study aims to evaluate the effectiveness of cattle manure amendments in improving water infiltration and related soil properties in dryland saline‐sodic soils. Our results show that mixing cattle manure into the topsoil soil significantly enhances infiltration rates, with the initial and the stable infiltration rates increasing on average by 64.5% and 52.1%, respectively, over the three‐year study period. These improvements are associated with a reduction in bulk density and soil compressive strength by 6.9% and 101.9%, respectively, as well as increases in total porosity, non‐capillary porosity, and soil organic matter by 6.6%, 24.7%, and 8.7%, respectively. In contrast, cattle manure mulching in the topsoil has no significant impact on infiltration and soil properties. Structural equation models reveal that soil water content, non‐capillary porosity, and total porosity are the primary properties influencing the stable infiltration rates, whereas total porosity, soil compressive strength, and non‐capillary porosity are key factors affecting the initial infiltration rate. Our findings demonstrated that incorporating cattle manure into the soil can effectively enhance the soil porosity properties, infiltrability, and organic matter content of saline‐sodic soils. These findings highlight the potential of cattle manure to improve soil physical properties and enhance water infiltration in low‐infiltrability saline‐sodic soils, offering a theoretical basis for addressing this issue in semiarid regions.

中文翻译：

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掺入牛粪可改善水力特性并提高低渗透性盐碱土壤的渗透率


旱地对全球农业生产构成了重大挑战，尤其是在旱地盐碱土壤中，其特点是结构不良和渗透性低。增强这些土壤的渗透能力对于增强土壤健康和优化土地利用效率至关重要。然而，很少有研究通过农业废弃物改善土壤物理结构并增强盐碱土壤中的水分渗透和储存能力。本研究旨在评估牛粪改良剂在改善旱地盐碱土壤中水分渗透和相关土壤特性方面的有效性。我们的结果表明，将牛粪混入表土土壤中可显著提高渗透率，在三年的研究期间，初始渗透率和稳定渗透率平均分别增加 64.5% 和 52.1%。这些改善与容重和土壤抗压强度分别降低 6.9% 和 101.9% 以及总孔隙度、非毛细孔隙度和土壤有机质分别增加 6.6%、24.7% 和 8.7% 有关。相比之下，表土中的牛粪覆盖对渗透和土壤特性没有显著影响。结构方程模型显示，土壤含水量、非毛细孔隙度和总孔隙度是影响稳定入渗速率的主要特性，而总孔隙度、土壤抗压强度和非毛细孔隙度是影响初始入渗速率的关键因素。我们的研究结果表明，将牛粪掺入土壤中可以有效提高盐碱土壤的土壤孔隙特性、渗透性和有机质含量。 这些发现突出了牛粪在改善土壤物理特性和增强低渗透性盐碱土壤中水分渗透的潜力，为在半干旱地区解决这个问题提供了理论基础。