SHANGHAI/BEIJING, March 28 (Reuters) - China plans to issue some policy bank bonds earlier in the second quarter to make way for planned sales of special treasury bonds, two sources said on Thursday.

Chinese Premier Li Qiang said during the parliamentary meeting in early March that the government plans to issue 1 trillion yuan ($139 billion) in special ultra-long-term treasury bonds, which are not included in the budget.

"Issuance volume of policy bank bonds will be increased in the second quarter to make way for treasury bond sales," said a source with direct knowledge of the plan. (Reporting by Shanghai and Beijing newsroom; Editing by Christian Schmollinger)