A worker picked strawberries at a farm in Palos de la Frontera, Spain Friday. (Marcelo del Pozo/Reuters) (credit)Not a technique that's familiar to me, but an arresting image of large-scale corporate farming.
Addendum: see note by Monique in comments section re the rationale for the setup shown.
Plastic mulch is commonly used with strawberry growing for several reasons. Strawberries thrive in cool, moist nights and cool but sunny days. White plastic will reflect heat generated from the sun indicating that the area in the picture is probably a little on the warm side. The raised plastic (instead of plastic laid directly on the ground to trap heat)will trap moisture indicating the area is probably a little low in humidity for optimal growing conditions.
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