| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a spreader in which supply accuracy of fertilizer is improved in spreading a small amount and in which changeover of small amount spreading and regular spreading is facilitated.SOLUTION: In the spreader, an adjustment part for adjusting a fall amount of an object 105 to be spread is provided with an operation part 108 by which a shutter plate 202 is moved relatively in a fixed direction and other directions for a hopper bottom plate 201. A fertilizer fall port is composed of a plurality of fertilizer fall ports for regular spreading, while an opening adjustment hole is provided with a plurality of opening adjustment holes for regular spreading and with one opening adjustment hole for a small amount spreading. With the shutter plate 202 relatively moved for the hopper bottom plate in a fixed direction by the operation part, the plurality of the fertilizer fall ports for regular spreading and the plurality of opening adjustment holes for regular spreading are made to coincide with each other. With the shutter plate relatively moved for the hopper bottom plate in other directions by the operation part 108, the opening adjustment hole for a small amount spreading is made to coincide with one of the fertilizer fall ports for regular spreading.</p> |
