PROBLEM TO BE SOLVED: To provide an agricultural sunlight controlling film which takes in consideration that the height of the sun varies along a north-south direction between summer and winter and the height of the sun varies along an east-west direction in one day, and can effectively guide the sunlight from the sun whose height varies in this manner into a greenhouse.SOLUTION: An agricultural sunlight controlling film 10 has a film base material 11 having an incident surface 11a and an emission surface 11b. A large number of convex parts are provided for the emission surface 11b of the film base material 11, and each convex part consists of a square pyramidal unit prism 12. The square pyramidal unit prisms 12 refract sunlight which is orthogonal to each other, and effectively guide the light into a greenhouse.SELECTED DRAWING: Figure 1
