Impact of long-term chemical fertilizer and organic amendment to Fusarium root rot of soybean  

作　　者：Kaili Wang Xinyu Hu Sai Yang Kaiyan Xing Xin Zhang Lin Zhu Xiaozeng Han Yanli Xu Wei Wei 

机构地区：[1]College of Agricultural Equipment Engineering,Jiangsu University,Zhenjiang,China [2]Key Laboratory of Mollisols Agroecology,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin,China [3]College of Food and Biological Engineering,Jiangsu University,Zhenjiang,China

出　　处：《Oil Crop Science》2020年第1期48-53,共6页中国油料作物学报(英文版）

基　　金：financially supported by the National Natural Science Foundation of China(41571253,41503068,31770543);Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD-2018-87);Initial Scientific Research Fund of Senior Talents in Jiangsu University(15JDG016,15JDG018)。

摘　　要：Soil suppressiveness to Fusarium root rot of soybean had been observed in a black soil field after a long-term fertilization with nitrogen(N)and phosphorus(P)fertilizer combined with pig manure as organic amendment(NPM),rather than that with only nitrogen and phosphorus fertilizer(NP)or no fertilizer(NF).To determine the microbial role on this suppressiveness,fungal and bacterial community characteristics in NPM,NP and NF treatments were investigated by q PCR and DGGE.Compared with the similar bacterial community characteristics among 3 treatments,fungal community,especially Fusarium population size and community composition in NPM treatment were different with those of NP and NF groups.Based on the isolation and pathogenicity test,pathogenic F.oxysporum,F.graminearum,F.verticillioide and F.lateritium absolutely dominated Fusarium community in NF and NP groups.Nonpathogenic F.avenaceum,F.equiseti,F.culmorum,F.redolens,F.solani and F.tricinctum dominated Fusarium community in NPM group.Isolation rate of pathogenic Fusarium in NPM reduced from 100%to 38%in NF.These results suggested that the dominance of soil non-pathogenic Fusarium population induced by organic amendment might play an important role on suppressing Fusarium root rot in the tested field.

关 键 词：Organic amendment Soybean root rot Pathogenic Fusarium Non-pathogenic Fusarium 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]