W. A. Dudek, M. Shabir and M. Irfan Ali discussed the properties of (

)-fuzzy ideals of hemirings in [9]. In this paper, we discuss the generalization of their results on (

)-fuzzy ideals of hemirings. As a generalization of the notions of

-fuzzy left (right) ideals,

-fuzzy h-ideals and

-fuzzy k-ideals, the concepts of

-fuzzy left (right) ideals,

-fuzzy h-ideals and

-fuzzy k-ideals are defined, and their characterizations are considered. Using a left (right) ideal (resp. h-ideal, k-ideal), we construct an

-fuzzy left (right) ideal (resp.

-fuzzy h-ideal,

-fuzzy k-ideal). The implication-based fuzzy h-ideals (k-ideals) of a hemiring are considered.