Regular-season play in the National Basketball Association will begin Oct. 30 next season instead of Oct. 10, as it has been in the past, so the NBA can avoid a conflict with major league baseball's playoffs and the World Series.

NBA Commissioner Larry O'Brien made the announcement following a meeting by the league's board of governors today, held in conjunction with Sunday's All-Star Game that will be played at the nearby Richfield Coliseum.

O'Brien said even with the later start, the season would not extend past June 6 and would last that long only if the championship series goes the full seven games. June 6 is also the latest possible date the season can end this year.

Los Angeles Laker Owner Jerry Buss had proposed the season be shortened and four more teams added to the playoffs, but the governors decided against that suggestion.

O'Brien also announced that this year's college draft will be june 9 and that the 1982 All-Star Game will be at the Meadowlands in New Jersey.

Even though the league has no plans for expansion "in the near future," according to O'Brien, a group from Vancouver, B.C., filed an application for a franchise. O'Brien said the offer was "substantial, greater than the Dallas offer," but the expansion committee, which met last week in Lost Angeles, didn't recommend expansion to the governors today.

The league also decided to continue its affiliation with the Continental Basketball Association and use it as a training ground for both players andd officials.