【摘要】 针对核桃青皮资源化利用程度低、核桃园土壤质量差等问题，通过室内培养试验，设置添加核桃湿青皮、干青皮、青皮生物质炭3种处理，无添加为对照，探究核桃青皮处理方式对土壤CO₂排放及化学性质的动态影响。结果表明：1)湿青皮和干青皮显著增加了土壤CO₂的排放量，累积排放量分别增加4 882.02、3 677.97 mg·kg^-1,而青皮生物炭与对照无显著差异；2)湿青皮、干青皮和青皮生物质炭处理土壤有机碳（SOC）分别增加了2.27、2.63、3.95 g·kg^-1,可溶性有机碳（DOC）分别增加了39.27、76.88、3.96 mg·kg^-1;3)土壤pH随培养时间的延长而逐渐降低，但是相较于对照分别提高了0.13、0.11、0.07;不同处理对土壤EC无显著性影响。CO₂累计排放量与DOC和pH呈显著正相关关系，与SOC和EC相关性不显著。总之，从固碳减排角度出发，建议将核桃青皮做成生物质炭后再施入土壤。更多还原

【Abstract】 In response to the low degree of resource utilization of walnut green husk and poor soil quality in walnut orchards, cultivation experiments were conducted to investigate the dynamic effects of walnut green husk treatment methods on soil CO₂ emissions and chemical properties.Three treatments were set up, including addition of wet walnut green husk, dry walnut green husk and green husk biochar to the soil.No addition was taken as the control.The results showed that:（1） Wet and dry green husk significantly increased soil CO₂ emissions, with cumulative emissions increased by 4882.02 and 3677.97 mg·kg^-1,respectively, while green husk biochar showed no significant difference compared to the control;（2） The soil organic carbon（SOC） of the treatments of green husk, dry green husk, and green husk biochar increased by 2.27,2.63,and 3.95 g·kg^-1 respectively, and the soluble organic carbon（DOC） increased by 39.27,76.88, and 3.96 mg·kg^-1,respectively;（3） The soil pH gradually decreased with the extension of cultivation time, but increased by 0.13,0.11,and 0.07 compared with the control, respectively.Different treatments had no significant effect on soil EC.The cumulative CO₂ emissions were significantly positively correlated with DOC and pH,but not significantly correlated with SOC and EC.In summary, from the perspective of carbon sequestration and emission reduction, it is recommended to turn walnut green husk into biochar before applying to soil.更多还原