Due to their high-water retention capacity, hydrogels are considered promising soil conditioners to improve soil plant available water content in semi-arid environments; however, little is known about how soil temperature affects the functionality of hydrogels. In this study, the effect of soil temperature on physical attributes of soil amended with a Acrylamide-co-Potassium Acrylate hydrogel was evaluated. A laboratory experiment was installed in a scheme (4 × 4) x 4 - four soil temperatures (30, 45, 65 and 105 °C), four exposure times (40, 70, 100, and 130 days) with four repetitions. The test soil was a Leptsol with sandy loam texture and of the hydrogel was applied at a dose of 0.1% w w⁻¹. Soil moisture at field capacity (θ_FC) and permanent wilting point (θ_WP), plant available water (AW), bulk density (BD), and soil porosity were evaluated. The resulting data was subjected to two-way analysis of variance. The hydrogel increased the θ_FC of the soil, from 0.14 to 0.19 m³ m⁻³ at 45 °C and 56 days. At 40 days, a minimum θ_WP (0.05 m³ m⁻³) was observed at 92 °C. In general, θ_FC increased, while the θ_WP decreased, providing improved soil water storage. Plant available water was up to three times higher in soil with hydrogel across a temperature range of 30–105 °C. In all treatments irrespective of temperature and exposure time, the soil BD and porosity were improved in comparison to the un-amended control. This constitutes an advantage in the use of the hydrogel as a soil conditioner. Even with the interaction of abiotic factors acting on the hydrogel, there are beneficial effects on the water storage capacity, soil BD, and soil porosity.

由于其高保水能力，水凝胶被认为是有前途的土壤调节剂，可改善半干旱环境中土壤植物的可用水分含量；然而，人们对土壤温度如何影响水凝胶的功能知之甚少。在这项研究中，评估了土壤温度对用丙烯酰胺-共-丙烯酸钾水凝胶改性的土壤物理属性的影响。实验室实验以 (4 × 4) x 4 方案安装 - 四个土壤温度（30、45、65 和 105 °C），四个暴露时间（40、70、100 和 130 天），重复四次。测试土壤是具有砂质壤土质地的 Leptsol，并且以 0.1% ww ^-1的剂量施用水凝胶。田间持水量土壤水分 (θ _FC) 和永久枯萎点 (θ _WP )、植物有效水 (AW)、容重 (BD) 和土壤孔隙度。对所得数据进行双向方差分析。水凝胶使土壤的 θ _FC在 45°C 和 56 天时从 0.14 增加到 0.19 m ³  m ^-3。在 40 天时，在 92 °C 时观察到最小 θ _WP (0.05 m ³  m ^-3 )。一般来说，θ _FC增加，而 θ _WP减少，改善土壤储水量。在 30–105 °C 的温度范围内，使用水凝胶的土壤中植物可用水量高出三倍。在所有处理中，无论温度和暴露时间如何，与未修改的对照相比，土壤 BD 和孔隙率都有所改善。这构成了使用水凝胶作为土壤调节剂的优势。即使非生物因素作用于水凝胶，也会对蓄水能力、土壤 BD 和土壤孔隙度产生有益影响。