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130lbs of Nitrogen, and it really depends on you soil test on how much p & k you will need.
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I dont pretend to know anything about this stuff, but I'd second that.
I did a 1 acre corn plot last year and I ended up broadcasting 300# of Urea (46-0-0, which is 138#'s of N) and the plot did very well. In fact, there is still a fair amount of ears left in the plot and the neighbor that planted it for me may combine it soon if he thinks there is enough to bother with.
I did a soil test through ISU and to my surprise N recommendations are not based on the test, only P&K. For N amounts they had a chart which varied depending on what had been planted there previously. I would imagine you could find that in the ISU website with a little searching.