The correlation between the long-term intensity variations of cosmic r
ays at neutron monitor energies and the LDE index measure of solar fla
res with long-lasting soft X-ray emissions is reported. Three subseque
nt solar cycles, 20-22, are taken into account and half-monthly data a
re analyzed. Possible explanation of this correlation is discussed in
terms of the recent concepts of cosmic-ray modulation, in particular w
ith merged interaction regions affecting the cosmic-ray intensity.