  Multiwavelength modelling of the spectral energy distribution of symbiotic
binaries suggests that a neutral disk-like zone is created around the hot star
near the orbital plane during active phases. Presumably, this is connected with
the enhanced wind from the active hot star. To test this idea, we applied the
wind compression model to active hot stars in symbiotic binaries, within which
the wind particles are compressed more to the equatorial plane due to a fast
rotation of the hot star. Accordingly, we calculated the ionization structure
for such compressed wind and ionizing photons from the hot star. We found that
the hot star wind, enhanced during active phases to \sim (10^-7 - 10^-6) M_sun
yr^-1, and the rotational velocity of 100 - 350 km s^-1 at the star's equator
lead to formation of a neutral disk-shaped zone. The presence of such disks is
transient, being connected with the active phases of symbiotic binaries. During
quiescent phases, such neutral disks cannot be created, because of insufficient
mass loss rate.
