Poland's Communist Party Central Committee suspended a crucial session today in order to allow consultations with regional party organizations over moves to authorize the declaration of a state of emergency, according to reliable Polish sources.

The Central Committee, the party's highest policy-making body, recessed after a series of speeches demanding tougher action against the independent Solidarity trade union federation and accusing party leaders of being weak.

The sources said a resolution under consideration also raised the possibility of an extended ban on strikes and renegotiation of economic and social concessions granted to Polish workers in August 1980.

The official Polish news agency PAP said that the 200-member Central Committee will meet again at 10 a.m. Sunday for a third, unscheduled day of debates. Political analysts said that reformists in the party might attempt to use the extension to launch a counterattack against hard-liners who have dominated the meeting so far.

Political analysts cautioned that, even if the Central Committee were to pass the draft resolution, it would not necessarily lead to the immediate assumption by the government of emergency powers. Instead, it could be intended more as another warning to Solidarity to back down from what the government regards as a dangerously political course.

The meeting was called to formulate an official reaction to Solidarity's national congress earlier this month. It ended with demands for major reforms that if implemented would limit severely the party's control over the economy and local government apparatus. It is the first time the Central Committee has met since Moscow complained sharply of an alleged wave of "anti-Sovietism."

The meeting took place behind closed doors, and only sketchy accounts emerged of the debate and the contents of the draft resolution.

A declaration of a state of emergency is regarded here as the government's ultimate weapon, which only would be used in an extreme necessity. In the past, Solidarity has said it would counter such a move by calling for a nationwide general strike and transferring its own offices throughout the country to the sanctuary of major factories.

Reports have circulated here several times before that the government was preparing emergency measures. But there always has been a wide gulf between contingency planning and the real decision.