西北农业学报2026，Vol.35Issue(5)：844-858,15.DOI:10.7606/j.issn.1004-1389.2026.05.006
不同种植年限对牡丹土壤性状和微生物群落的影响
Effects of Different Planting Years on Soil Properties and Microbial Communities in Tree Peony
摘要
Abstract
To clarify the effects of different planting years on the soilphysicochemical properties and the bacterial community structure of Paeonia suffruticosa Andr.,this study analyzed soil samples col-lected from varying planting durations(0,3,6,9,and 12 years)and soil depths(0-20 cm,20-40 cm,40-60 cm,and 60-80 cm).Soil physicochemical properties and microbial community structure were systematically analyzed to assess their impacts on peony growth and development.The results indica-ted that soil organic matter(SOM),available potassium(AK),and hydrolytic nitrogen(HN)initially increased and then decreased with increasing planting duration.Specifically,SOM content in the 0-20 cm and 20-40 cm layers peaked in the sixth year before declining significantly(P＜0.05).Microbial community analysis revealed that after six years of planting,the abundance of beneficial bacteria,such as Actinobacteria and Proteobacteria,decreased in the 20-40 cm layer,while the abundance of patho-genic fungi such as Fusarium spp.increased,resulting in bacterial abundance.Correlation analysis demonstrated significant positive relationships between SOM,total nitrogen(TN),total phosphorus(TP),and the phylum Gemmatimonadetes.The cultivar'Fotouqing'exhibited optimal growth vigor during 3-6 years of planting.However,plant height,crown width,new branch length,and other indi-cators significantly decreased after the sixth year(P＜0.05)due to soil microecological imbalance.In conclusion,after six years of continuous planting,the 20-40 cm soil layer exhibited reduced effective-ness,continued reduction in beneficial bacterial,a significant increase in pathogenic fungi,and an over-all soil microecological imbalance,all of which inhibited peony growth and development.This study elucidates the primary causes of growth deterioration in long-term peony cultivation and provides a theoretical basis for sustainable planting management.关键词
牡丹/土壤理化性质/微生物群落/相关性分析/生长发育Key words
Peony/Soil physicochemical properties/Microbial community/Correlation analysis/Growth and development引用本文复制引用
任家玄,王卫成,潘艳花,汤玲,黄蓉..不同种植年限对牡丹土壤性状和微生物群落的影响[J].西北农业学报,2026,35(5):844-858,15.基金项目
甘肃省农业科学院重点研发计划项目(2024GAAS15). The Key Research and Development Plan of Gansu Academy of Agricultural Sci-ences(No.2024GAAS15). （2024GAAS15）
