Lorimar and Telepictures said that proxy materials related to their proposed merger have been declared effective by the SEC and that each company will hold a shareholder meeting on Feb. 6 to vote on the plan . . . Pasadena-based Beverly Enterprises said its first-quarter fiscal 1986 results will include a $6.5-million after-tax extraordinary charge . . . Amfac, San Francisco, said it will realize a pretax first-quarter gain of about $14.7 million from the sale of land.