TORONTO (Reuters) - The Bank of Canada said on Tuesday it bought back C$1 billion ($1.02 billion) of three government bonds in a cash management repurchase operation. The next cash management bond repurchase operation will be October 16. For details, see: http://www.bankofcanada.ca/markets/government-securities-auctions/calls-for-tenders-and-results/?page_moved=1 (Reporting by Alastair Sharp; Editing by Jeffrey Hodgson)