[en] The experimental study on the magnetic phase transitions in the DyMn₂Ge₂ layered tetragonal intermetallic compound is continued. Presence of spontaneous phase transitions is proved through measuring the lattice parameters temperature dependences and the initial magnetic susceptibility. Two new magnetic transitions, induced by the field, are identified by the measurements in the strong (up to 50 T) and superstrong (up to 150 T) fields. The account for the exchange interaction between the manganese layers, following the closest ones, alongside with the antiferromagnetic exchange interaction of the neighboring layers and the crystal field effects for the rare-earth subsystem made it possible to describe the DyMn₂Ge₂ magnetic properties within the wide range of magnetic fields. The interaction parameters are determined on the basis of comparing the experimental and calculated magnetization curves and phase H-T-diagrams