生物炭因其增强土壤水力物理性质的能力而日益受到认可,为改善土壤结构提供有希望的解决方案,保水,和整体农业生产力。在这项研究中,在不同的热解温度(300、400、500和600°C)下,以不同的速率(0、15、30和60tha-1)对橄榄渣(Jift)产生的生物炭进行了改良,并孵育30、60和90天。在每个潜伏期后,收集生物炭改良的土壤进行渗透率分析,骨料稳定性,土壤保水,防水性,和抗穿透性。在300°C时,聚集体稳定性随生物炭的改良剂而增加;最高值(65%)是在孵育60天后。在其他热解温度下,骨料稳定性下降,或者没有观察到温度的影响。此外,在300°C,随着生物炭的施用,渗透率降低,最低值(0.14ml/min)在孵育90天。在其他热解温度下,渗透率随生物炭施用量的增加而增加。在300°C下使用生物炭可以增加保水性;但是,在其他热解温度下,生物炭的应用不会影响保水性。这些结果强烈表明,在添加生物炭改良剂后,土壤的物理和水力特性得到了改善。总的来说,生物炭对水物理性质有积极影响。在300°C热解温度下产生的生物炭对农业相关的水力条件最有利。然而,实地评估对于评估生物炭对水物理性质的长期影响是必要的。
Biochar is increasingly recognized for its ability to enhance hydro-physical properties of soil, offering promising solutions for improving soil structure, water retention, and overall agricultural productivity. In this study, sandy loam soil was amended at different rates (0, 15, 30, and 60 t ha-1) of biochar produced from olive pomace (Jift) at different pyrolysis temperatures (300, 400, 500, and 600 °C), and incubated for 30, 60, and 90 days. The biochar-amended soils were collected for analysis after each incubation period for infiltration rate, aggregate stability, soil water retention, water repellency, and penetration resistance. At 300 °C, aggregate stability increased with biochar amendments; the highest value (65%) was after 60 days of incubation. At other pyrolysis temperatures, aggregate stability decreased, or no effect of temperature was observed. Also, at 300 °C, the infiltration rate was decreased with biochar application and the lowest value of (0.14 ml/min) was at 90 days of incubation. At other pyrolysis temperatures, the infiltration rate was increased with increased biochar application rate. Water retention was increased with biochar application at 300 °C; however, biochar application did not affect water retention at other pyrolysis temperatures. These results strongly suggest the improvement of soil physical and hydraulic properties following the addition of biochar amendment. Overall, biochar had positive effects on hydro-physical properties. The biochar produced at 300 °C pyrolysis temperature was the most beneficial to agriculturally relevant hydraulic conditions. However, field assessments are necessary to evaluate the long-term effects of biochar on hydro-physical properties.