It is proved that the Bergman type operator T? is a bounded projection from the pluriharmonic Bergman space Lp(B)∩h(B) onto Bergman space Lp(B)∩H(B) for 0<p<1 and s>(p-1-1)(n+1). As an application it is shown that the Gleason’s problem can be solved in Bergman space LP(B)∩H(B) for 0<p<1.