A federal appeals court panel yesterday gave publisher Rupert Murdoch a temporary reprieve from having to sell the New York Post by March 6.

The U.S. Appeals Court panel of three judges said Murdoch will have 45 days after their final order on the case to comply with the Federal Communications Commission's cross-ownership rules, according to FCC spokesman Sally Lawrence.

Murdoch last week asked the court to order the FCC to consider his application for more time to sell either a television station or newspaper in Boston and New York. After Congress last month barred further waivers of its cross-ownership rules requiring the sale of second media properties in the same market, the FCC refused to grant Murdoch a second waiver.

Members of Congress from New York yesterday introduced bills in both the House and Senate to repeal or revise the amendment, and as part of his legislative request attached to the State of the Union address, President Reagan also was expected to ask Congress to repeal the amendment that was part of the spending bill he signed last month.

Sens. Daniel P. Moynihan (D-N.Y.) and Alfonse D'Amato (R-N.Y.) introduced a bill that would give Murdoch until January 1989 to sell either the New York Post or WNYW-TV in New York.

Rep. Raymond McGrath (R-N.Y.) introduced a bill in the House that would repeal the amendment and restore FCC authority to extend waivers to its cross-ownership rule.

The amendment, attached to the spending bill last month by Sens. Ernest Hollings (D-S.C.) and Edward Kennedy (D-Mass.), prohibits further FCC waiver extensions.