【摘要】 为探究红松-刺龙牙套栽对土壤理化性质的影响，为实现红松-刺龙牙套栽模式的健康经营提供理论依据，以未郁闭的红松人工林为研究对象，比较了红松人工林套栽刺龙牙后土壤理化性质的变化。结果表明：套栽模式能够显著降低土壤比重，增加土壤持水量和孔隙度，明显改善了土壤的水分和物理性质，套栽后表层土壤含水量能够达到433.25 g·kg^-1，显著高于对照(357.61 g·kg^-1)。套栽模式能够显著增加土壤有机碳含量，套栽模式表层土壤有机碳含量能够达到29.42 g·kg^-1，显著高于对照(21.92 g·kg^-1)。其中土壤有机碳含量与土壤含水量、最大持水量、毛管持水量、最小持水量、毛管孔隙度和总孔隙度等水分和物理性质，以及全氮含量、水解氮含量、全磷含量、有效磷含量、速效钾含量等化学性质显著正相关，与土壤容重显著负相关。综上，红松-刺龙牙套栽显著改善了土壤理化性质和养分，因此需要针对这些变化设计更加合理的水肥管理措施。更多还原

【Abstract】 To explore the influence of Pinus koraiensis-Aralia elata interplanting on the physicochemical properties of soil,in this study,the artificial forest of Pinus koraiensis was taken as the research object,and the changes in soil physicochemical properties after interplanting Aralia elata in the artificial forest of Pinus koraiensis were compared.The results indicated that the interplanting model could significantly reduce soil specific gravity,increase soil water holding capacity and porosity,and evidently improve the water-physical properties of the soil.The soil moisture content in the top layer after interplanting could reach 433.25 g·kg^-1,significantly higher than that of the control (357.61 g·kg^-1).The interplanting model could significantly increase the content of soil organic carbon,and the content of soil organic carbon in the top layer under the interplanting model could reach 29.42 g·kg^-1,significantly higher than that of the control(21.92 g·kg^-1).Among them,the content of soil organic carbon was significantly positively correlated with waterphysical properties such as soil moisture content,maximum water holding capacity,capillary water holding capacity,minimum water holding capacity,capillary porosity and total porosity,as well as chemical properties such as total nitrogen content,hydrolyzed nitrogen content,total phosphorus content,available phosphorus content and available potassium content,and was significantly negatively correlated with soil bulk density.In summary,Pinus koraiensis-Aralia elata interplanting significantly improved soil physical and chemical properties and nutrients,so more reasonable water and fertilizer management measures should be designed for these changes.更多还原