| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiple row seedling planter which properly controls the seedling-planting depth of each planting row in response to the shape of a ridge surface and solves a problem that a conventional multi-row seeding planter can uniform the seedling-planting depth of each planting row on a laterally outside-low ridge surface or a Kamaboko (boiled fish paste)-shaped ridge surface, but can always suitably not control the seedling-planting depth of each planting row, because the shape of the ridge surface is different in response to a ridge-forming process, soil quality or the like, especially because the lateral outside ends of the ridge surface have large inclination angles and have irregular heights. SOLUTION: This multiple row seedling planter is provided with height-changing mechanisms (115) for changing the vertical heights of lateral outside seedling planters (25) on the basis of lateral inside seedling planters (25) of the machine frame. This multi-row seedling planter is disposed with lateral outside seedling planters (25) at positions near the axle (10) of travel wheels (6) on the basis of the lateral inside seedling planters (25) of the machine frame. COPYRIGHT: (C)2007,JPO&INPIT
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