The Washington Bullets tapped two forwards, Greg Ballard of Oregon and Maurice (Bo) Ellis of national-champion marquette, as their two first-round draft selections in yesterday's National Basketball Association draft.

As expected, the Bullets made the 6-foot-7, 220-pound Ballard the fourth player chosen. the 6-foot-9, 190-pound Ellis was the 17th player picked.

There were no surprises through the first five selections. Milwaukee, picking first and third, took Indian a center Kent Benson and UCLA forward Marques Johnson, the college player of the year.

Kansas City, with the second selection, took Houston guard Otis Bird song.

The Bullets followed with Ballard, and Phoenix took North Carolina's Walter Davis.

Then there were some surprises.

The Los Angeles Lakers, with three picks in the first round, first tabbed North Carolina State's Kenny Carr.

With their second pick, the 15th selection overall, the Lakers took Maryland's Brad Davis.

Carr and Davis, whose classes will not graduate this year, put their names on the NBA's hardship list to become eligible for the draft.

After the Lakers made Carr the sixth player chosen, the New York Nets took another nongraduate, Tennesssee's Bernard King.

Seattle, which was expected to take King's teammate at Tennessee, Ernie Grunfeld, went instead to Jack Sikma, a 6-11 center from Illinois Wesleyan.

Sikma was one of the players the Bullets were considering as their second pick in the first round.

It came as a minor shock when the Lakers took Brad Davis ahead of Michigan All-America Rickey Green. Golden State took Green 16th in the draft.

That left the Bullets to choose among guard Ed Jordon of Rutgers, forward Anthony Roberts of Oral Robert, forward Rich Laurel of Hofstra, forward Wesley Cox of Louisville and Ellis, according to Bullets coach Dick Motta.

Bullet general manager Bob Ferry was quick to point out that although the Bullets drafted two big forwards planning to trade anyone, particularly Elvinhayes.

"Every move we have made has been centered around Elvin being there next year," Ferry said. "There's no question that surrounded with all the right people, he can be a valuable member of a championship team. But he's only 6.9. He can't do it alone."

Ferry said the Bullets remain interested in still another forward, former Milwaukee Buck Bob Dandridge, now a free agent.

If the Bullets can sign Dandridge, who has said he wants to play in Washington, they would have to compensate the Bucks. Bo one is speculating on what compensation might be.

Ferry and Motta wanted Johnson and were fairly close to making a number of deals that would have put them in a position to draft him. But in researching Johnson and Ballard, who both played in the Pacific Eight Conference, the Bullets became increasingly impressed with Ballard and finally decided not to trade for the third pick and a shot at Johnson.

Oregon beat UCLA twice this past season and Ballard outscored Johnson in both games.

At Oregon, Ballard played in a very regimented system under coach Dick Harter. It was a slowdown offense where everyone was restricted, except Ballard. He averaged 21.7 of his team's 65 points a game. No one else average more than nine.

Motta said he is trying to get out of the small forward-big forward concept and Ballard is just the type of person he has been looking for - a combination of the two.

"I played strong forward but I can play the other spot," Ballard said. "I'm willing to give up things to help the team.

"Whatever role the coach wants me to play, I'll play," Ballard continued. "I just want to help the Bullets any way I can."

Ballard added that his preference would have been to play in Los Angeles, because he is from that area, or Phoenix, because-his close friend, Ron Lee, plays there. "But I'm pleased to have been drafted by the Bullets," he said.

The Bullets took 6-foot-2 1/2 guard Phil Walker of Millersville, Pa., in the second round. Walker, who was drafted in the seventh round last year by Philadelphia, "is a lot like Tom Henderson," Ferry said. "He's a special kind of kid. He played guard on offense and center on defense." e averaged 26.9 points and 13.4 rebounds last year.

Walker had another year's college eligibility and elected to stay in school after being drafted last year. He had not declared hardship last year and thus could play college ball last season.

Washington had two third-round picks and took 6-foot-11 1/2 center Steve Puidokas of Washington State and 6-foot-6 forward Jerry Schellenberg of Wake Forest.

In the fourth round, the Bullets took former Mackin High School player David Reavis of Georgia. They picked American University's Calvin Brown in the seventh round and Towson State's Pat McKinley in the eight and final round.

Other local players selected were Stan Mayhew of Western High School and Weber State by Indiana in the third round, Bill Langloh of De Matha and Virginia by Boston in the fifth round, and Bruce Buckley of Bladensburg and North Carolina in the sixth round by San Antonio.

New Orleans and Kansas City pulled suprises in the seventh round. The Jazz, picking sixth, chose center Lucy Harris of the Delta State (Miss.) NCAA women's basketball national champions. Harris is the second woman ever picked - Denise Long was drafted by Golden State four years ago but the pick was nullified.

The Kings chose 1976 Olympic decathlon champion Bruce Jenner three picks later, Jenner, who broke his leg in a recent motorcycle accident, is 6-1 and 190 pounds.