About 1,000 D.C. government officials filed financial disclosure reports yesterday, showing, among other things, that Deputy Mayor Curtis McClinton is a partner in real estate ventures here and in Kansas and that Mayor Marion Barry's wife received $28,000 last year from her job with an advertising firm that does business with the District.

McClinton, deputy mayor for economic development, said last night that his interest in various real estate partnerships occurred before he joined the D.C. government in 1983 and that none of the entities does business with the city.

Under city law, top city officials, including the mayor, D.C. City Council members, other elected officials and members of boards and commissions, must file reports by May 15 of each year revealing certain aspects of their finances for the previous year.

The city's financial disclosure law, which is designed to reveal potential conflicts of interests and was once regarded as one of the toughest in the nation, was revised by the City Council several years ago. Critics say the changes weakened the law and, as a result, many of the forms submitted have blank pages and reveal little.

Keith Vance, the director of the Office of Campaign Finance, said yesterday that as part of an effort to impose stricter disclosure requirements two years ago he added three questions seeking disclosure of outside employment, business affiliations and all private business interests, including stocks and bonds held by an official or family member.

However, Vance said, because the new questions have not been submitted to the D.C. Board of Elections and Ethics for approval, city officials are not required to answer them yet and several have refused to do so.

Reports for 11 of the 13 council members were available for inspection yesterday. Vance said reports from council members H.R. Crawford (D-Ward 7) and Frank Smith (D-Ward 1) were not available, but the reports may have been sent in but not yet processed.

Barry said in his report that he and his wife had been entertained in a number of homes where the total cost of the food may have exceeded $100, but he said he had no way of knowing the true cost and that none of this entertainment influenced his official duties.

The salary of his wife Effi stems from her job as vice president for corporate affairs for JAM Corp., a public relations and advertising firm that has several city contracts. Effi Barry was hired by JAM in June 1984 and received $13,461 that year, according to Barry's 1984 disclosure statement.