<P>PROBLEM TO BE SOLVED: To provide the technology of a rice transplanter which can quickly control a travel machine frame to a stopped state or a low speed state without separately performing an operation, when a residual seedling quantity is reduced to a quantity needing the supply of seedlings on a planting work. ??<P>SOLUTION: This rice transplanter 1 having a variable speed transmission 21 for changing the output of an engine 5 and then transmitting the changed output to wheels 6,7, and a speed change actuator 60 for changing the speed change ratio of the variable speed transmission 21 on the basis of the operation quantity of a speed change pedal 16, on a travel machine frame 3 having a seedling-planting device 2, is characterized by disposing a residual seedling quantity detection means 58 for detecting whether the residual seedling quantity in the seedling-planting device 2 is a set value or not, and a controller 80 for driving the speed change actuator 60 so that the speed change ratio of the variable speed transmission 21 is a value for controlling the travel machine frame 3 in a stopped state or a low speed state, when it is detected that a residual seedling quantity detected by the residual seedling quantity detection means 58 is less than the set value. ??<P>COPYRIGHT: (C)2010,JPO&INPIT ??
