Travel from Shanghai to Nanjing Agricultural university

You can take the airport shuttle bus line 5 to SH Railway Station, where you can take the high-speed trains to Nanjng South.

As for the university, you must refer to the Weigang campus, right?
If so, after arrive at the train station, you can take the bus 84 and get off at Tongwei Road South Station, about 60 meters from the campus.

Or you can take the subway line 1 and get off at Xinjiekou Station, where you can transfer to line 2 to Xiamafang Station. Leave from the Exit 3 and walk about 200 meters to the destination.