The invention belongs to the technical field of biology, and particularly relates to Burkholderia contaminans T and an application thereof. According to the Burkholderia contaminans T, bacteria are screened and mutated, bred efficient activation silicon bacteria are utilized, silicon leaching conditions are optimized, optimum technology parameters are acquired, selectivity of silicon leaching effects of the bacteria are preliminarily verified by the aid of different characterization methods, and a bacterial strain with good silicon activation effect is cultured by selection. The Burkholderia contaminans T is collected in a China Center for Type Culture Collection on September 17, 2019, the collection number is CCTCC NO: M 2019732, and classification of the bacterial strain is named as (Burkholderia contaminans T).