soil mixture for repotting

this is the soil mixture that we have done. it use for repotting  flowers.............
we use system 3:2:1 which is 3 portion of the top soil then 2 portion of the sand and 1 portion of the chicken dung..............this is function to give the fertility of the soil...........which have been use for a long time.......
the flower that we do reporting are dendrobium, pokok garuda.... and so on......