  Interactions among the standard model gauge bosons and scalar fields in the
framework of SU(3)_C X SU(3)_L X U(1)_X gauge model with minimal (economical)
Higgs content are presented. From these couplings, all scalar fields including
the neutral scalar $h$ and the Goldstone bosons can be identified and their
couplings with the usual gauge bosons such as the photon, the charged $W^\pm$
and the neutral $Z$, without any additional condition, are recovered. In the
effective approximation, full content of scalar sector can be recognized. The
CP-odd part of Goldstone associated with the neutral non-Hermitian bilepton
gauge boson $G_{X^0}$ is decouple, while its CP-even counterpart has the mixing
by the same way in the gauge boson sector. Masses of the new neutral Higgs
boson $H^0_1$ and the neutral non-Hermitian bilepton $X^0$ are dependent on a
coefficient of Higgs self-coupling ($\lambda_1$). Similarly, masses of the
singly-charged Higgs boson $H_2^\pm$ and of the charged bilepton $Y^\pm$ are
proportional through a coefficient of Higgs self-interaction ($\lambda_4$). The
hadronic cross section for production of this Higgs boson at the LHC in the
effective vector boson approximation is calculated. Numerical evaluation shows
that the cross section can exceed 260 $fb$.
