and the top plate, projecting from the first lateral edge of the top plate portion and,, and a second protrusion height of one end is greater than the projected height of the other end 1 of the side plate portion, the side plates of the first from the second lateral edge part is opposed to the first lateral edge projecting, projects in the same direction as the first side plate portion, and a position corresponding to one end of the first side plate portion the projection height of the end portion, the a first greater side plate portion protruding height of the end portion of the position corresponding to the other end of the second side plate portion, from one end of the first side plate portion the first attached to the edge before an edge of the top plate extends to the end of the second side plate portion at a position corresponding to one end of the side plate portion, and the side attached to the front edge a protective cover and a front plate portion which uneven portions are formed on the opposite side, and herbicidal machine provided with the protective cover.天板部と、該天板部の第1の側方縁部から突出し、かつ、一端の突出高さが他端の突出高さより大きい第1の側板部と、該第1の側板部が突出した前記第1の側方縁部と対向する第2の側方縁部から、同第1の側板部と同じ方向に突出し、かつ、同第1の側板部の一端に対応する位置の端部の突出高さが、同第1の側板部の他端に対応する位置の端部の突出高さより大きい第2の側板部と、前記第1の側板部の一端から同第1の側板部の一端に対応する位置の前記第2の側板部の端部にまで及ぶ前記天板部の縁部である前縁部に取付けられ、かつ、同前縁部に取付けられた側とは反対側に凹凸部が形成された前面板部とを備える保護カバー、および該保護カバーを備える除草機。
