Amid new American warnings of increased Soviet readiness to intervene in Poland, the official press here today continued to portray that country as caught in a spreading power struggle between the communist leadership and "antisocialist forces" backed by the West.

The party paper Pravda, in a dispatch from Warsaw, declared that the cancellation of last Tuesday's threatened strike by Solidarity was only a brief pause in the intensifying contest for control of Moscow's beleaguered East Bloc ally. The Polish people, the article said, were gravely concerned and demanded action by the Communist Party.

Meanwhile, West German Foreign Minister Hans-Dietrich Genscher met with Soviet President Leonid Brezhnev on the last of two days of talks here. The sessions, which informed Western sources termed "open, clear and factual," may have narrowed the differences that divide Moscow from Bonn and Washington on the question of negotiations on "Eurostrategic" missiles.

At an official luncheon given by Foreign Minister Andrei Gromyko, Genscher urged "all nations" to adopt a policy of noninterference in Polish affairs and said Bonn gives Warsaw economic aid as "a contribution to cooperation in Europe." An account of Genscher's toast from the official news agency Tass did not include these remarks.

In its own article on the Polish situation, the government paper Izvestia said the captalists want to push anti-government forces into a decisive showdown with the Polish part, and condemned President Reagan and his administration for cautioning that U.S. economic aid would be jeopardized if Solidarity's independence is repressed.

In a separate dispatch read on Soviet television news, Tass asserted that members of the Committee for Social Self-Defense (KOR), whom Moscow has labeled virulent right-wingers, had gained strength in Solidarity councils.

Pravda quoted the Polish Army paper as saying KOR had taken control of Solidarity's information work, "which allows wide possibilities for brainwashing various groups."

Pravda accused Nazi "revanchist circles" in West Germany of spreading anti-Soviet leaflets, and said Polish workers and party groups were protesting the union's attempts to discredit the government and employ job actions for political gain.

Izvestia said the fact that the AFL-CIO has a Polish workers aid fund proves the West seeks polictical confrontation. Tass stressed that Polish leader Stanislaw Kania in a speech today declared, "It would be an unpardonable mistake not to notice those Solidarity forces who are trying to put this trade union association on the path of political action and even substitute for the party in the solution of the country's main problems."

This is the kind of tough talk Moscow has been expecting from Kania and which its fresh military preparedness may be aimed to strengthen.

West German sources said Genscher came away from today's round of talks with the impression Moscow is interested in holding negotiations about arms levels in Europe without preconditions.

The sources said Brezhnev and Genscher talked for two hours, but they gave no details. Tass said Brezhnev declared in part that "the question is to reduce the levels of military confrontation without upsetting the existing equilibrium of forces. We are ready for that."

Moscow has maintained that NATO's 1979 decision to deploy new cruise and Pershing missiles to offset alleged Soviet intermediate-range rocket superiority is in fact intended to give the allies superiority and that talks can only proceed if the plan is suspended or reversed.

Brezhnev is February advanced the idea of a freeze on deployment coupled with negotiations, and Moscow has been angered by the quick rejection the idea got from the Reagan administration and Chancellor Helmut Schmidt.