Prime Minister Ian Smith said today the Carter administration lacks experience and needs time "to feel their feet and I am prepared to give them that time."

Smith said during a news conference that anti-Rhodesian opinion in the United States may have hardened recently.

"However, I would say to you we have now got a new administration in America. I don't want to be unkind but it is a fact they lack experience . . .

"They are new people," Smith said. "We recently saw an incident which substantiated this, where the American Secretary of State has had to differ in public with what one of the other American appointees has said in public."

Smith apparently was alluding to the State Department's recent statement that Secretary of State Cyrus R. Vance disagrees with an assertion by U.N. Ambassador Andrew Young that Cuban troops provide stability in Angola.

Smith said he recently rejected a British peace plan because it provided no guarantee of an orderly transfer of power from his white-minority government to Rhodesia's black majority and "would have the effect of handing over the control of our country to externally based terrorist leaders."

The Rhodesia Herald, meantime, assailed Young for not including white-ruled Rhodesia and South Africa in his tour of Africa.

In an editorial, the newspaper described Young as a "strolling player from the theater of the absurd."

About 400 mission school students, who Rhodesia says were forced at gunpoint into Botswana, will be brought to a town near the Rhodesian border Saturday to meet their parents, International Red Cross officials and a British diplomat.

About 150 parents are being brought by road under a Rhodesian guard to the border where Botswana police will take over to escort them to Francistown, about 20 miles inside Botswana.

The children from the Manama mission in southwestern Rhodesia crossed into neighboring Botswana last Sunday after armed guerrillas called at the mission. Rhodesia says they were abducted, but Botswana insists that they crossed the border voluntarily to escape harassment by Rhodesian forces.

The children will be individually interviewed Saturday by representatives of the International Red Cross.