[en] Results of comparison are presented between the experiment and linear relations between differential cross sections of inclusive reactions in the region of target fragmentation within the framework of approach based on the Muller-Regge phenomenology and on the hypothesis of the Regge trajectory factorization. The relation between the differential cross sections of the π^-→π⁰+X reaction for two different energy values has been derived. The differential cross sections of the π^-p→π⁺/π^-/π⁰+X reactions have been calculated at 5 GeV/c on the basis of the above relations from data on the reactions of K⁺p→π^+-+X at 32 GeV/c, π⁺p→π⁰+X at 10.5 GeV/c and K^-p→π^+-+X at 8.25 GeV/c. There is an agreement between calculated and experimental differential cross sections of the π^-p→π⁺/π^-/π⁰+X at 5GeV/c