It is proved that the Bergman type operatorT, is a bounded projection from the pluriharmonic Bergman spaceL p (B)∩h(B) onto Bergman spaceL p (B) ∩ H(B) for 0p 1 ands (p1-1)(n+1). As an application it is shown that the Gleason’s problem can be solved in Bergman space LP(B)∩H(B) for 0p 1.