3. A set sequence forming all or part of a performance by an actor, entertainer, etc., typically rehearsed in advance and performed on several occasions. Frequently with preceding distinguishing word or phrase.
1928 Charleston (W. Va.) Gaz. 20 Nov. 11/4 (caption) We figured out a little comedy routine with you as a lion-tamer and Joe doing the lion!
man of the land is a noun phrase that has been hyphenated as it is used as an adjective = that is in the manner of a man associated in some way with the land - usually, "the man" would be associated with the land in an agricultural sense, but here in the sense of "working with land."
The hyphenated noun can be altered by changing the noun:
A man of the land/sea/high mountains, etc., and can even use abstract concepts: a man of great ideas/fabulous wealth/low intelligence/poor taste, etc.