The Senate has quietly approved $1.9 billion for U.S. forces in Bosnia, while soundly rejecting a move to force the Clinton administration to start withdrawing troops.

The moves, boosts to the Clinton administration's Bosnia policy, came during Senate passage Thursday of a $252 billion defense appropriations bill.Reflecting continued concern about the open-ended NATO operation in the region, the Senate adopted a contrary message on the crisis in the Serbian province of Kosovo. Senators sought to head off U.S. involvement in Kosovo by requiring presidential consultation with Congress before any military involvement.

Other wide-ranging provisions in the Senate version of the House-passed bill would sweeten military pay increases, help soldiers kick the tobacco habit and deny visas to foreign government officials involved with the worst human rights abuses.

Under both House and Senate versions of the bill, military spending will increase just 1 percent for fiscal 1999, which begins Oct. 1. The exact figure and other issues in the legislation will be resolved by a House-Senate conference committee before the measure goes to President Clinton.