English: “Mixed seeds” — the verse speaks of two species.
On the daf / in context: The term kilayim is defined by comparison with the parallel verse in Vayikra: just as there it means two distinct species, so here.
Type of Learning
Gezerah shavah / definitional comparison of the word “kilayim.”
What Is Learned
The prohibition of vineyard kilayim requires two different species sown together.