土壤2025，Vol.57Issue(5)：1025-1033,9.DOI:10.13758/j.cnki.tr.2025.05.009
促生木霉菌施用对山药生长及土壤微生物区系的影响
Effects of Different Growth-promoting Trichoderma Strains on Growth and Soil Microbiome of Chinese Yam
摘要
Abstract
High-throughput sequencing technology was used to investigate the effects of different types of Trichoderma fungi and their composite inoculants on yam growth,as well as soil physicochemical properties and microbial communities under field conditions.The results showed that,compared with the control without Trichoderma strain inoculation(CK),treatments with inoculation with Trichoderma guizhouense NJAU4742(T1),Trichoderma longibrachiatum JS84(T2),Trichoderma longibrachiatum MD30(T3),and the composite inoculant of these three Trichoderma strains mentioned above(T4)all increased plant height,leaf length and width,and yield of Chinese yam.Specifically,compared with the control,yam yields under T1,T2,T3,and T4 increased by 7.29%,26.37%,1.38%,and 31.77%,respectively.Nevertheless,only T4 exhibited a significantly higher yield.Principal coordinates analysis(PCA)revealed that Trichoderma inoculation significantly altered soil bacterial and fungal community compositions,promoting the growth of beneficial microbial genera such as Bacillus and Trichoderma.Further redundancy analysis(RDA)indicated that soil available potassium content was one of the key nutrient factors driving the assembly of soil bacterial and fungal communities,showing a strong correlation with Bacillus and Trichoderma genera.Mantel's correlation analysis further found significant positive correlations between yam yield with the contents of soil organic matter,available potassium and phosphorus.This study demonstrates through field experiments that the application of Trichoderma inoculation can promote yam growth and yield,with composite microbial inoculants showing the best growth-promoting and soil-amendment effects.The findings provide technical support for utilizing functional microbes to promote Chinese yam growth..关键词
山药/木霉/生物量/土壤微生物群落/关键微生物Key words
Yam/Trichoderma/Biomass/Soil microbial community/Key microorganisms分类
农业科技引用本文复制引用
程欢欢,王琰,袁紫仪,郭文琦,韩晓勇,杨健,沈宗专,李荣,沈其荣..促生木霉菌施用对山药生长及土壤微生物区系的影响[J].土壤,2025,57(5):1025-1033,9.基金项目
中央本级重大增减支项目(2060302)、国家重点研发计划项目(2023YFD1500904)和江苏高校青蓝工程项目资助. （2060302）
