PROBLEM TO BE SOLVED: To provide a rice transplanter having a rotary type seedling planting device capable of correcting defects such as twisting of power transmission elements attributable to functioning of a non-uniform velocity member.SOLUTION: A rice transplanter of the present invention includes a reverse phase torque generation member 130 for adding a reverse phase torque Tan which becomes a reverse phase to a rotation torque T of a transplant mechanism 8 on the basis of a non-uniform velocity rotation power. The rice planter also includes a row-stopping clutch 102 for connecting or disconnecting the power transmission to the transplant mechanism 8 from a spacing speed change gear 26, in an elongate planting transmission case 31 of a seedling planting device 2. The reverse phase torque generation member 130 is disposed in the downstream side of the row-stopping clutch 102 in the planting transmission case 31.
