  The static longitudinal and transverse gluon propagators in the Landau gauge
are studied in $2+1$ lattice QCD with nonzero isospin chemical potential
$\mu_I$. Parameterization of the momentum dependence of the propagators is
provided for all values of the chemical potential under study. We find that the
longitudinal propagator is infrared suppressed at nonzero $\mu_I$ with
suppression increasing with increasing $\mu_I$. It is found, respectively, that
the electric screening mass is increasing with increasing $\mu_I$.
Additionally, we analyze the difference between two propagators as a function
of the momentum and thus compare interactions in chromoelectric and
chromomagnetic sectors.
