  The rapidity and transverse momentum spectra for identified hadrons in
central Au+Au collisions at $\sqrt{s_{NN}}= 200$ GeV are computed in a quark
combination model. The data of rapidity distributions for $\pi^{\pm}$,
$K^{\pm}$, $p(\bar{p})$ and net protons $(p-\bar{p})$ are well described. We
also predict rapidity distributions for $K^{0}_{s}$, $\Lambda(\bar{\Lambda})$,
$\mathrm{\Xi^{-}}$ ($\mathrm{\bar{\Xi}^{_+}}$) and
$\mathrm{\Omega^{-}}+\mathrm{\bar{\Omega}}^{_+}$. The multiplicity ratios of
charged antihadrons to hadrons as a function of rapidity are reproduced. The
results for ${p}_{T}$ spectra of $\pi^{\pm}$, $K^{\pm}$, $p(\bar{p})$ and for
the $p/\pi$ ratios in a broader ${p}_{T}$ range agree well with the data.
Finally the rapidity dependence of transverse momentum distributions for
hadrons are given.
