Only if you choose to.
Glorfindel's answer is great, but misses this important point. From the rulesreminder text on Evolution Sage, what proliferate actually does is:
Choose any number of permanents and/or players, then give each another counter of each kind already there.
So it's up to you if you want to choose Blast Zone. You could not choose it, in which case it'll still only have one counter. You could even choose your opponent's Blast Zone, if he has one on the board, to mess up opponent's math.