UNITED NATIONS, JAN. 22 -- Secretary General Javier Perez de Cuellar issued a report today concluding that Israel "has used disproportionate force" in dealing with demonstrations in the occupied territories, and proposing that the international community put pressure on the government to use "less harsh measures" against the Palestinians.

The 16-page report, requested by a Security Council resolution Dec. 22, was drafted by Undersecretary Marrack Goulding, who spent 10 days in the area earlier this month.

"What we saw and heard," Goulding reported, "suggested to me that the rejection of the occupation by the people in the territories is so strong that this problem is not going to go away."

The secretary general, in his recommendations, called on Israel to train its troops in more humane riot control, permit prompt evacuation of the wounded and deliveries of essential food and medicine.

But Perez de Cuellar cautioned that such measures "can only be palliatives." Over the long term, he said, the only way to protect both Palestinians and Israelis is negotiation of an Arab-Israeli settlement.

He endorsed an international peace conference, but made clear that the "fundamental" way to promote negotiation is for the five permanent members of the council -- Britain, China, France, the Soviet Union and the United States -- to seek common ground on "how the present impasse in the peace process can be unblocked."

{Israel's U.N. ambassador, Binyamin Netanyahu, rejected the report as an attempt to force Israel into an international peace conference, Reuter reported. "The report is one-sided and extreme," he said.}

State Department spokesman Charles E. Redman said the United States "shares many of the concerns" in the U.N. report.

Soviet Foreign Minister Eduard Shevardnadze, in a letter to Perez de Cuellar circulated today, supported discussions among the five major powers, but emphasized that these should be designed to produce an international conference.