July 8, 1985

States across the country are passing laws to crack down on parents who fail to pay child support. The laws give judges and other state officials stronger tools to enforce orders requiring parents who live apart from their children to contribute to their support. Among the new measures are provisions for seizing income tax refunds or withholding wages from people who fall too far behind on child support. Federal Standards Set ''There is a tremendous amount of activity in state legislatures addressing the issue this year,'' said Fred Schutzman, the deputy director of the Federal Office of Child Support Enforcement.

The City Department of Correction said yesterday that it would ask Federal immigration authorities to screen more carefully the detained aliens it sends to a Brooklyn jail where a dozen Cubans awaiting deportation attacked and injured 18 guards Saturday. A department spokesman, Edward Hershey, said city officials would urge United States Immigration and Naturalization Service representatives at a meeting today to change the procedures that allowed the Cubans, all of whom have criminal records, to be transferred to the Brooklyn Correctional Facility. The minimum-security jail on the site of the former Brooklyn Navy Yard brig, at 136 Flushing Avenue in the Fort Greene section, houses about 200 prisoners in dormitories. In the violence Saturday, one prisoner punched a guard during the morning roll call and others began throwing lockers and other furniture at unarmed officers who were called to help, Mr. Hershey said.

For two weeks he beat a path on the grass courts at the All-England Club, defying tennis tradition and the logic that said he was too young to win. Boris Becker argued logic with a serve that earned him the nickname Boom Boom, and ignored tradition with the irreverence of youth. And today, the 17-year-old from West Germany wrote a storybook ending when he became the youngest champion in the history of the men's singles at Wimbledon. Playing before a crowd of 15,000 at Centre Court, on a worn surface that was more dirt than grass, Becker defeated Kevin Curren, 6-3, 6-7, 7-6, 6-4, in a match in which the serve was often too quick for a reply. Becker had 21 aces and Curren 19 and there were stretches during the match when there was no need for a player on the other side of the net.

Six huge airlines with the power to control fares and routes could emerge from turbulent forces that are reshaping the industry, many Wall Street analysts and airline executives believe. If they are right, such a concentration in a business that now has a dozen or so major participants would severely undercut the competitive forces that legislators sought to unleash when they approved deregulation of the airline industry in 1978. Many top airline executives have asked their staffs to investigate possible mergers with other companies or acquisitions of international routes. Others, such as American Airlines, think mergers can bring more problems than they solve and plan to rely on internal expansion to keep up with the competition. If a trend to fewer and bigger airlines develops, the fare wars that have wreaked havoc within the industry in the past few years could diminish, some analysts believe.

Vietnam has promised to return the remains of 26 more American servicemen who died in the Vietnam War, the largest such turnover since the fighting ended, Americans officials said today. Officials traveling with Secretary of State George P. Shultz on a tour of Southeast Asia and Australia appeared surprised and delighted at the commitment, which was made to a United States military casualty research group that just ended a three-day mission to Hanoi. Visit With Cambodia Rebels On Monday, Mr. Shultz will meet with Thai officials in Bangkok, and on Tuesday he will visit a Cambodian refugee camp inside Thailand on the border with Cambodia. United States officials said Mr. Shultz would meet with two leaders of Cambodia's non-Communist resistance movement in Bangkok.