| 摘要 |
PROBLEM TO BE SOLVED: To provide a seedling transplanter which can surely detect the hardness or softness of a field, can accurately control the planting height of a seedling-planting portion, and can thereby plant seedlings in high accuracy.SOLUTION: A seedling transplanter in which a seedling planting portion 6 is liftably connected to the rear side of a travel vehicle body 1, and the planting height of the seedling planting portion 6 with respect to the vehicle body 1 is upward or downward controlled by the attack angle swinging of a float 2 disposed on the lower portion of the seedling planting portion 6 to keep the seedling-planting depth approximately constant, is provided with a sensitivity-setting device 7 for setting the sensitivity of lifting or lowering control to highly insensitive or less sensitive, and a first sensor 8 and second sensor 9 as a plurality of hardness or softness sensors 10 used for detecting the hardness or softness degree of soil and having different detection characteristics, and can correct the control sensitivity of lifting or lowering control by the detection of the first sensor 8 or the second sensor 9 selected corresponding to the control sensitivity of the lifting or lowering control. |
