PURPOSE: To make it possible to effectively fix a net cover in such a manner that branches and leaves of a fruit tree are not caught by group of jetting nozzles of a sprayer.

CONSTITUTION: In a speed sprayer equipped a spray device (A) consisting of the jetting nozzles 3 enabling to freely swing, which are provided in a sector shape in a front view at the back of a chemical tank 2 being at the back of a driver's seat 1, the net cover B, having a sector shape in a front view, enabling to cover at the upper part of the outer periphery of the jetting nozzles, is constituted to be attached movably in the back and front direction of the machine body so as to enable to open and close the upper part of the outer periphery of the jetting nozzles 3.