PROBLEM TO BE SOLVED: To provide a heat and light-blocking agricultural film that is useful for putting up for a house for in mushroom bed culture and/or illumination culture, can set reflectance of sodium lamps used for illumination culture within a range suitable for growth control of crops, in addition to heat and light-blocking properties, and is capable of securing a comfortable view when working within a light-blocking house.SOLUTION: The present invention discloses a multilayer film having three layers of a transparent layer 1, a white layer 2 and a gray layer 3 in this order, wherein each of the three layers contains a polyolefin resin, and among the three layers, the side on which the transparent layer is positioned is the side which is exposed to sunlight, the solar reflectance of the side, which is exposed to sunlight, of the multilayer film is 60% or more, the visible light reflectance of the gray layer is 5% or more to 50% or less, and the gray layer is farthest away from the side, which is exposed to sunlight, in the position of the colored layer, and the total light transmittance of the multilayer film is 0.01% or less.SELECTED DRAWING: Figure 1
