PROBLEM TO BE SOLVED: To provide a technique capable of spraying powder or granular material with good quantitative property. When the maximum length of the transport direction MD of the powder or granular material P by the transport means 3 at the discharge port 23 is D, and the maximum length of the direction CD orthogonal to the transport direction MD at the discharge port 23 is W. W / D is 100 or less. Further, when the discharge amount of the powder or granular material P from the discharge port 23 per minute is M, and the target value of the spray amount of the powder or granular material P by the transport means 3 per minute is m, M / m is 1. It is 5.5 or more. Further, when the bulk density of the powder or granular material P is ρ, the area of the discharge port 23 is S, and the separation distance between the discharge port 23 and the transport means 3 is G, m / (ρ × S × G) is 21 / min. That is all. [Selection diagram] Fig. 4
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