草原与草坪2025，Vol.45Issue(1)：71-79,9.DOI:10.13817/j.cnki.cyycp.2025.01.009
3种委陵菜对践踏胁迫的生长与生理响应
Study on growth and physiological responses of P.anserina,P.reptans var.sericophylla and P.reptans to trampling stress
摘要
Abstract
[Objective]This study provided a theoretical basis for the garden application of three Potentilla spp.and provided groundcover plant resources for the construction of green gardens.[Method]Potentilla anserina,P.rep-tans var.sericophylla and P.reptanswere used as experimental materials.After no trampling(CK),light trampling(L)and heavy trampling(H),wemeasuredThe growth,physiological and soil indexeswere measured,and correlation analysiswascarried out.[Result]With the increase of trampling,soil bulk density and compaction increased,total po-rosity and non-capillary porosity decreased.The aboveground growth of three Potentillaspp.was characterized by a decrease inplant height,crown width and biomass,while subsurface growth was characterized by a decrease in bio-mass and an increase in the number of roots.Physiological indicators showed that leaf REC increased,POD content increased,MDA content decreased,leaf RWC and chlorophyll content decreased in P.reptans var.sericophylla,SP content increased first and then decreased in P.reptans,and continued to decrease inother two Potentilla spp.The re-sults of correlation analysis show that crown width was negatively correlated with soil bulk density,compactness and water content,positively correlated with soil total porosity and non-capillary porosity.There was a negative correla-tion between above-ground and subsurface biomass,soil compactness and water content,and a positive correlation be-tween above-ground and subsurface biomass and total soil porosity.There were correlations between root configura-tion and soil compactness,capillary porosity and water.[Conclusion]Under light trampling,three Potentilla.spp.in-creased the number of fibrous roots,soluble protein and POD content to reduce water loss,clear reactive oxygen to cope with stress;however,both growth and physiological activities were significantly suppressed under heavy tram-pling,and difficult to recover in a short time.Based on the growth and physiological responses and recovery perfor-mance,the trampling tolerance of P.anserina is stronger than the other two.The above results also provided a refer-ence forgroundcover plant selection according to visitor arrivals and trampling frequency in green gardens.关键词
绢毛匍匐委陵菜/匍匐委陵菜/鹅绒陵菜/践踏胁迫/生长生理/土壤Key words
Potentilla anserina/Potentilla reptans var.sericophylla/Potentilla reptans/trampling stress/growth and physiological response/soil分类
农业科技引用本文复制引用
曾思琦,程澜,张雪茹,易文非,范舒欣,董丽..3种委陵菜对践踏胁迫的生长与生理响应[J].草原与草坪,2025,45(1):71-79,9.基金项目
北京市西城区财政科技专项(XCSTS-SD2021-09) （XCSTS-SD2021-09）
国家自然科学基金项目(32171860) （32171860）
