August 10, 1984

Evelin, 19 years old, sat on the porch of her adobe shack, one of a handful in this tiny hamlet in the grassy hills of central El Salvador. Guiliguiste, so remote that it is reachable only by walking for an hour and a half from the nearest town, has a population of perhaps 50 people. All of them support the rebels fighting to overthrow the United States-backed Government. ''Here there are only supporters,'' said Evelin. who was eating sorghum seeds that were in a cup of chile water. ''There are no longer people who are of the other tendency. They left.''

Markets Bond prices surged as demand from domestic and foreign investors was more than enough to absorb the $16.75 billion of Treasury notes and bonds sold this week. The outlook for lower interest rates was also enhanced after the Federal Reserve said there was a surprisingly large $2.6 billion decline in the nation's basic money supply for the week ended July 30. (Page D1.) Stocks resumed their rally after a three-day lull , fueled by sharply falling interest rates paid on bonds. Hectic late afternoon trading pushed the Dow Jones industrial average up 27.94 points, to 1,224.05. Volume on the Big Board expanded to 131.2 million, up from Wednesday's 121.2 million shares. (D1.)

A brief article yesterday about a symposium on abstract painting and sculpture at the Whitney Museum of American Art gave incorrect dates for the symposium and for the closing of a related exhibition, ''Abstract Painting and Sculpture in America 1927-44.'' The symposium is Sept. 8; the exhibition closes Sept. 9.

Friday CAROUSEL' AT N.Y.U. ''Carousel,'' the 1945 Rodgers and Hammerstein musical about a factory worker, Julie Jordan, who falls in love with a carousel barker, Billy Bigelow, will be performed by the New York University Summer Musical Theater tonight in its final performance of the season. Richard Rodgers once said that the story was his favorite of all his shows, and critics have said that its adventurousness has made it seem less dated, perhaps, than any other Rodgers musical. It begins at 8 in the University Theater, a 350-seat air-conditioned auditorium at 35 West Fourth Street, southeast corner of Washington Square. Seats are $6; $5 for students or the elderly. The box office is open today from 10 A.M. to 6 P.M. Ticket availability: 598-3067. PIER'S BRAZILIAN FINALE Thiago de Mello and his band, Amazon, will play an evening of Brazilian jazz under the stars at a free concert tonight on Pier 16 at the South Street Seaport, where Fulton Street meets the East River. The concert, which begins at 8, is the last in the Seaport's fifth summer season. Tickets are distributed from the box office begining at 6 P.M. A line forms earlier. It's a good idea to bring something to sit on, as the pier is made of wood; smoking is not allowed, for the same reason. Information: 669-9400. BUSY CANADIAN BRASS

An article yesterday about four benefit concerts for the New Music Distribution Service, a promoter and distributor of contemporary-music recordings, gave an incorrect date. The concerts, in two auditoriums at the Public Theater, will be at at 4 and 8:30 P.M. on Aug. 26.