PROBLEM TO BE SOLVED: To provide a riding type transplanter for planting seedlings and simultaneously supplying an agrochemical materials to a paddy surface, wherein a deaerating work and works for eliminating the bridge phenomenon of each portion can suitably be performed, before a planting work is started and after an agricultural supply material is charged into an empty storage portion. SOLUTION: This riding type transplanter has a planting transmission system for transmitting power to a seedling-planting device 5 and an agrochemical material transmission system for transmitting power to delivery portions 80a to 80h, 81a to 81d, which are disposed in parallel. The power is transmitted to the seedling-planting device 5 via the planting transmission system, and the power is transmitted to the delivery portions 80a to 80h, 81a to 81d via the agrochemical supply material transmission system. A transmission-disconnection mechanism 50 for freely transmitting or disconnecting power is provided at a planting transmission system portion on the upstream side of the seedling-planting device 5. COPYRIGHT: (C)2008,JPO&INPIT
