Bank of Japan Gov. Masaru Hayami on Tuesday dismissed speculation that the central bank plans to inject more money into the economy in the near future.

Comparing the economy to an ailing plant, Hayami said, "It is doubtful how effective giving more water (liquidity) to the plant would be. It might even be harmful."

The governor indicated that the central bank would not ease its ultra-loose monetary policy while concrete steps toward structural reform have yet to be drawn up.