Industrial unrest appeared to be subsiding in Poland today with the settlement of two major strikes involving the independent trade union federation, Solidarity.

In the southwestern region of Zielona Gora, 150,000 strikers resumed work after the suspension of a protest over alleged mismanagement by local officials. And in Sosnowiec, a mining town in the southern industrial region of Silesia, 2,500 miners called off a strike protesting an incident last month in which Solidarity members were sprayed with poisonous gas.

The end of the last two major strikes in the country is likely to improve the political climate here prior to detailed talks between the communist authorities and Solidarity that are to begin Tuesday. While several scattered protests still continue in parts of the country, none involve big factories.

The Sosnowiec strike was settled following a personal appeal by the miners to Gen. Wojciech Jaruzelski, premier and new Communist Party leader. The miners demanded that state television present their allegations against local officials.

The strike began Oct. 27 after vials of gas were thrown from an unidentified car at a Solidarity meeting near the mine gates. Miners suspected hard-line Communists of responsibility for the incident and alleged that the authorities failed to investigate it thoroughly.

A two-hour program devoted to the miners' grievances was screened on television last night, thus paving the way for the settlement of the strike. The miners called for compensation to be paid to the more than 50 victims of the attack who were later treated in local hospitals.

In Zielona Gora, strikers agreed to return to work after receiving assurances that Solidarity would press their demands for replacement of three state farm managers.

Communist Party leaders have threatened a total legal ban on strikes unless Solidarity heeds an appeal by the National Assembly for an end to industrial unrest.