The West German government today sharply denied allegations of private Bonn-Moscow dealings on national security and suggested that some kind of plot was under way to subvert relations between the United States and West Germany and destory the internal domestic climate in both countries.

"Repeately over the last few days," the federal press office here said in a statement to journalists, "made-up articles have appeared in the American and West German press.

"They are obviously born out of the mutual motive to disturb the relationship between the U.S. and the Federal Republic of Germany. And rumors are being spread to destroy the respective inner political climate in both countries."

Bonn spokesman Armin Gruenewald said that a suggestion in an article by columnists Rowland Evans and Robert Novak that the West German government was negotiating with the Soviets behind the back of its North Atlantic Treaty Organization partners was false and strongly rejected. He said the reported private talks between the Ressians and Germans "do not exist."

The press office said it was "a made-up statement" that, as reported in the column, Bonn had received a three-point message from Moscow that stated a Soviet view that President Carter had become too weak to win Senate approval for a new strategic arms accord; that it was time for Bonn and Moscow to work out a disarmanent plan for Central Europe; and that Moscow will take care of Bonn's oil needs when the time comes.

The press office also declared false a report by the columnists that Chancellor Helmut Schmidt had assured the Soviets that West Germany would not allow new U.S.-built medium-range nuclear missiles, capable of reaching Russia, to be based on West German soil.

Gruenewald pointed out that Schmidt had made clear the German position on stationing of such weapons in a parliamentary speech last week. In the speech, the chancellor said Bonn would go along with a NATO decision to modernize atomic arms here with newer missiles if it were a joint decision and if West Germany were not the only country on whose soil they were based.

Bonn is not a nuclear power and does not want to be portrayed as becoming one or being the only one to accept these new weapons. But the condition voiced by Schmidt probably is going to be hard to stasfy and is thus being perceived in some quarters and catering to what the Soviets would prefer -- namely no new missiles.

On Monday, Schmidt's chief spokesman, Klaus Boelling, criticized a story from Bonn that had appeared in The Washington Post on Friday in which it was reported that in private remarks Schmidt said the United States had given up its economic leadership as far back as the Nixon administration, showed no ambition to recover it and that Europeans, especially the French and Germans, must now lead.

At another point, the chancellor was reported as saying the United States had lacked guts in Angola a few years ago when Congress restricted American action, a remark that, in particular, is known to have disturbed American officials who heard it.

Boelling claimed that the chancellor's remarks were taken out of context. He did not deny that Schmidt made them.

Articles reporting concern over strains in U.S.-German relations and the growing improvement in relations between Bonn and Moscow have been appearing in many newspapers in other countries in recent weeks, including Britain and France as well as the United States and West Germany.

In large part, the spate of articles is due to the actions of the Schmidt government itself. It is a widely accepted view through much of the Western diplomatic corps in Bonn that the present government, for a variety of reasons, has been trying to get along better with the Soviets at a time when there is concern here that the American administration, through its China policy and other moves, may damage East-West detente.