In a bid to end a tailspin in Tokyo stock prices, the government on Thursday unveiled six emergency steps, including stricter control of speculative sales.

Experts said, however, the package will have only short-term effects, and that stocks will head south again if deep-rooted problems -- such as banks' bad-loan woes and deflation -- are not confronted.

"These steps will virtually have no effect on the market," said Kenji Yumoto, senior chief economist at private think tank Japan Research Institute. "The government has to solve the country's more fundamental problems."