In Iowa, that region is the north-western part of the state, which enjoys high crop yields but gets 25-50 cents less per bushel because it is too far from the Mississippi river barges.

• 在艾奥瓦，类似的地区处于该州西北部，虽然农业产量高，但每蒲式尔少挣25到50美分，因为该地区远离密西西比河驳船码头。