中国烟草科学2025，Vol.46Issue(5)：46-52,7.DOI:10.13496/j.issn.1007-5119.2025.05.006
烟麦(薯)带状复合种植对烟草镰刀菌根腐病发生的影响
Effects of Tobacco-Wheat(Sweet Potato)Strip Rotation on Occurrence of Tobacco Fusarium Root Rot
摘要
Abstract
To investigate the effect of tobacco-wheat(sweet potato)strip rotation on the occurrence of tobacco Fusarium root rot and the soil microbial community structures,two treatments were established,i.e.,continuous cropping of tobacco(SC)and tobacco-wheat(sweet potato)strip rotation(RC),and the field incidence of Fusarium root rot was surveyed.The structure and composition of the rhizosphere soil microbial community in tobacco were analyzed,along with the microbial interactions.Spearman correlation analysis was used to assess the relationship between soil microbial community parameters and disease index.Thus the effects of different cropping patterns on the occurrence of tobacco Fusarium root rot were clarified.Main results are as follows.(1)Tobacco-wheat(sweet potato)strip rotation significantly reduced the disease index(DI)of root rot in continuous cropped flue-cured tobacco(44.2%lower than that of continuous cropping).(2)Strip rotation significantly altered the composition and structure of the rhizosphere microbial community in flue-cured tobacco.Compared with continuous cropping,the relative abundance of Fusarium spp.reduced by 49.5%.(3)Compared with continuous cropping,the microbial co-occurrence network in the rhizosphere soil under rotation exhibited greater stability,with the modularity index increasing by 4.53%.(4)The disease index(DI)of root rot was significantly and positively correlated with the relative abundance of Fusarium spp.,the bacterial and fungal community structures,and microbial co-occurrence network diameter,respectively,while significantly negatively correlated with fungal community richness,evenness,and network modularity index,respectively.In conclusion,tobacco-wheat(sweet potato)strip rotation significantly enhances the stability of the rhizosphere soil microbial network,reduces the relative abundance of Fusarium spp.,and suppresses the occurrence of Fusariumroot rot.关键词
烤烟/带状复合种植/镰刀菌/根腐病/根际土壤微生物Key words
flue-cured tobacco/strip rotation/Fusarium spp./root rot/rhizosphere soil microbiota分类
植物保护学引用本文复制引用
徐文正,范艺宽,刘巧真,郭芳阳,吴照辉,常栋,张睿,宋瑞芳..烟麦(薯)带状复合种植对烟草镰刀菌根腐病发生的影响[J].中国烟草科学,2025,46(5):46-52,7.基金项目
中国烟草总公司河南省公司重点项目(HNYGLCX202327) （HNYGLCX202327）
中国烟草总公司重大科技项目[110202201026(LS-10)] （LS-10）
