Country importing really amazing nectarines, primarily (4)
I believe the answer is:
iran
'country' is the definition.
(Iran is an example)
'importing really amazing nectarines primarily' is the wordplay.
'primarily' says to take the initial letters.
The first letters of 'importing really amazing nectarines' is 'IRAN'.
(Other definitions for iran that I've seen before include "Middle East country" , "Modern-day Persia" , "Persia some time ago" , "Country where ayatollahs replaced a shah" , "Modern name for Persia" .)