Jamieson, Fausset and Brown on Ezekiel 17:7

7. another ... eagle--the king of Egypt (Eze 17:15). The "long-winged" of Eze 17:3 is omitted, as Egypt had not such a wide empire and large armies as Babylon.

vine ... bend ... roots towards him--literally, "thirsted after him with its roots"; expressing the longings after Egypt in the Jewish heart. Zedekiah sought the alliance of Egypt, as though by it he could throw off his dependence on Babylon (2Ki 24:7, 20; 2Ch 36:13; Jr 37:5, 7).

water it by ... furrows of ... plantation--that is, in the garden beds (Judea) wherein (the vine) it was planted. Rather, "by" or "out of the furrows." It refers to the waters of Egypt, the Nile being made to water the fields by means of small canals or "furrows"; these waters are the figure of the auxiliary forces wherewith Egypt tried to help Judah. See the same figure, Is 8:7. But see on Eze 17:10, "furrows where it grew."