When its been tried to get people back to working on the land through government action its not gone well. Mao and Pol Pot basically.
Working in very intensive agriculture could provide much needed employment for millions of climate refugees. Tech people talk of having robot tractors trundling up and down fields zapping weeds with lasers instead of spraying biocides. It would be just as effective to have a large number of people with hoes.
Even things like smaller scale agriculture replacing massive machinery with many people would be a step in the right direction in my book.
If its a case of work on the land or starve....