[Drake]

You should probably refer to it as construction rate. Production typically refers to resources (and sometimes research/intel) that you are producing.

Like Triumvir mentioned, if you take the +25% planetary space yard advanced trait, that's added to your construction racial setting - but just for planets.

With temporal space yards, a bonus to construction, the +25% trait, and a population construction bonus, you can get your construction rate to over 10K per turn on huge planets and ring/sphere worlds without too much trouble. Hope that helps.