est German government spokesman Kurt Becker today defined Bonn's position on stationing of U.S.-made medium-range nuclear missiles here, saying that as a condition for proceeding with deployment in this country, West Germany would insist that all the countries that have agreed to take the missiles begin deployment simultaneously.

Britain, Italy and West Germany so far have agreed to stationing of the missiles in their territory.

The West German condition on timing, Becker said, is in addition to Bonn's longstanding insistence that at least one nonnuclear continental European power other than itself agree to accept the missiles.

Italy's acceptance had satisfied this condition, but Italy reportedly is experiencing technical delays in preparing the sites for the new U.S. cruise missiles earmarked for it.

Becker's explanation came in response to a report in yesterday's Washington Post that said he had confirmed that Bonn asked Washington for a delay in the planned stationing of U.S.-made medium-range nuclear missiles in West Germany.

Becker, denying the report, said it involved an interpretation of something he had said rather than a confirmation by him.

The Washington Post, quoting Pentagon sources, reported Sunday that Bonn officials had privately voiced concern that because of the delays in Italy, the planned deployment of U.S. Pershing II nuclear missiles in West Germany apparently would be taking place before the stationing of cruise missiles in Italy. Consequently, according to that report, the Pentagon had agreed to push back by four months to April 1984 the date for initial deployment in West Germany.

Secretary of State Alexander M. Haig Jr., in Bonn on Monday for consultations with West German officials, denied the report and said the North Atlantic Treaty Organization missiles program was on schedule.