Thousands of New Jersey commuters who usually ride trains to and from Pennsylvania Station in Manhattan will have to detour through Hoboken for most of the summer, Gov. Chris Christie announced on Tuesday.

The diversions will be necessary to make room for emergency track repairs by Amtrak, the quasi-governmental entity whose operation of Penn Station has drawn the wrath of Mr. Christie and Gov. Andrew M. Cuomo of New York. Mr. Christie called Amtrak officials dishonest and incompetent at a news conference in Trenton.

“We know we can’t trust Amtrak,” Mr. Christie said, several hours after Amtrak closed an additional track at Penn Station with no warning in a move Mr. Christie described as “a sophomoric episode.” That early-morning track closing caused delays of up to two hours and further damaged the frayed relationship between officials of New Jersey Transit and Amtrak, Mr. Christie said.

New Jersey Transit is the second-biggest user of Penn Station, running 63 trains to its overburdened platforms during the morning rush every weekday. The Long Island Rail Road, which also will have to curtail service to Penn Station this summer, carries even more passengers there.