  The real-space RG approach is applied to study critical temperatures of
system consisting of interacting spin chains of spin S=1 with an inner
antiferromagnetic exchange which form a honeycomb crystal lattice. Using
anisotropic Heisenberg model we calculate critical temperature as a function of
anisotropic parameter and the ratio of interchain and intrachain interactions.
A comparison our results with those obtained from RGRS calculations for the
same model of spin-1/2 on a square lattice is given.
