应用生态学报2024，Vol.35Issue(6)：1599-1607,9.DOI:10.13287/j.1001-9332.202406.015
复合菌剂对新疆辣椒的促生效果和根际真核生物群落结构的影响
Effects of effective microorganisms on growth promotion and the rhizosphere eukaryotic community struc-ture of pepper in Xinjiang,China
摘要
Abstract
Effective microorganisms(EM)might alleviate deterioration of soil environmental quality and yield de-cline of pepper(Capsicum annuum)caused by continuous replanting and imbalanced fertilizer application in Xin-jiang.We investigated the effects of applying EM microbial agent on the growth of pepper plants,yield,soil nutri-ent content,soil enzyme activity,and rhizosphere eukaryotic community.The results showed that the application of EM microbial agent increased plant height,stem diameter,leaf length,leaf width and root length by 22.6％,35.3％,33.3％,29.7％and 15.1％,respectively.It also increased fruit width,individual fruit weight,and yield by 5.3％,42.9％,and 74.7％,respectively.After the application of EM microbial agent,the levels of soil available nitrogen increased by 10.2％and 5.8％during the flowering and maturity stages,respectively.Similarly,available phosphorus increased by 10.4％and 13.4％,respectively.The soil sucrase activity was increased by 40.7％,14.6％,and 9.3％during the seedling,flowering,and maturity stages,respectively.Urease activity was also increased by 7.9％,10.2％,and 11.5％,respectively.Furthermore,the application of EM microbial agent in-creased soil peroxidase activity by 16.8％and 44.6％at flowering and maturity stages,respectively.The application of microbial agent significantly altered the β-diversity of the rhizosphere eukaryotic community in pepper plants.Specifically,microbial agent increased the relative abundances of populations belonging to Enchytraeus and Sminthurides genera,which could contribute to soil improvement and nutrient cycling.Compared to the CK,the rel-ative abundance of pathogenic microorganisms including Olpidium and Aplanochytrium genera decreased by 98.0％and 89.3％,and the relative abundance of the Verticillium decreased to 0.These results demonstrated that EM microbial agent could increase soil nutrient content,enhance soil enzyme activity,and reduce soil pathogenic fungi in the pepper cultivation areas of Xinjiang,thus achieving beneficial effects on pepper growth and fruit yield.关键词
有效微生物/辣椒生长/产量/土壤养分/根际真核生物Key words
effective microorganisms/pepper growth/yield/soil nutrients/rhizosphere eukaryotes引用本文复制引用
刘聪,万翠翠,宋旭,夏光富,傲耐,桑加拉,王奎明,王军..复合菌剂对新疆辣椒的促生效果和根际真核生物群落结构的影响[J].应用生态学报,2024,35(6):1599-1607,9.基金项目
本文由新疆博湖县农业农村局科技创新重点培育专项(20030801)资助. （20030801）
