Depends on the fertilisers, you would need to know the exact make-up of your ferts.
Fundamentally, they are usually based on the same chemicals, but tbh this is the kind of question where if you need to ask in the first place, then you don't know enough about the composition and how the chemicals are used by the plants to judge weather it's safe or not in the first place.
SO basically you could, but don't try it.