不同栽培处理对薯蓣根际微生物数量的影响  

Effects of different treatments on the numbers of yam rhizospheric microbes

作　　者：黄思良[1] 林善海[2] 岑贞陆[3] 姚炯培 覃丽萍[3] 陈秋 晏卫红[3] 黎礼海 

机构地区：[1]南阳师范学院生命科学与技术学院,河南南阳473061 [2]广西大学农学院,广西南宁530004 [3]广西农业科学院微生物研究所,广西南宁530007 [4]广西桂平市政协经济科技委员会,广西桂平537200 [5]广西桂平市金田镇农业技术服务中心,广西桂平537200 [6]广西桂平市农业局,广西桂平537200

出　　处：《南阳师范学院学报》2010年第9期38-42,共5页Journal of Nanyang Normal University

摘　　要：对7种不同栽培处理的薯蓣根际土壤微生物进行分离及检测结果显示:锯末和稻秆基质穴栽的薯蓣根际土壤中薯蓣枯萎病菌(Fusarium oxysporum)拮抗微生物的数量分别为3.10×103CFU/g与4.30×105CFU/g,添加黄泥穴栽处理区、常规处理区及锯末、稻秆或黄泥添加辛硫磷的处理区均未检测到拮抗菌.实验结果表明,有机物的添加,有助于拮抗微生物的生长繁殖及土传病害,辛硫磷对根际拮抗微生物有抑制作用.Isolation and analysis of rhizospheric microbes from the attachments on yam tubes with seven different cultivated treatments were carried out.The results showed that in the treatments of sawdustor rice straw-amended hole cultivations,the numbers of the rhizospheric microbes with antagonistic activity against Fusarium oxysporum causing yam wilt were 3.10×103 CFU/g and 4.30×105 CFU/g,respectively.No antagonists were detected in the treatments of the yellow mud-amended hole cultivation,traditional cultivation and sawdust,rice straw or yellow mud puls phoxim cultivation.The investigation indicated that the addition of organic substance in hole cultivation of yam was propitious for survival and reproduction of antagonistic microbes in the rhizospheric soil of yam,and for suppression of soilborne diseases.The application of phoxim had a suppressive effect on development of the antagonist populations.

关 键 词：薯蓣 土传病害 栽培基质 土壤微生物 生物多样性 

分 类 号：S154.36[农业科学—土壤学]