| 摘要 |
PROBLEM TO BE SOLVED: To provide a rice transplanter with a fertilizer applicator formed to supply a liquid fertilizer stored in a fertilizer tank to a fertilizing nozzle set at the under part of a seedling planting device by feeding with a pump through a feeding pipe under pressure, wherein, by suppressing flowing-out of remaining fertilizer when fertilization is halted, next fertilization is made promptly performable without using a high-ability pump. SOLUTION: A fertilizer-leakage prevention mechanism 30 preventing flowing-out of remaining fertilizer in feed pipes 21a, 21b is put in a fertilizer supplying route, which remaining fertilizer naturally flows down and flows out from fertilizer nozzles 20a, 20b when force feed using pumps 18a, 18b is halted. The fertilizer-leakage prevention mechanism 30 is formed so that a valve 33 openably put in the fertilizer supplying route is switched and held at a route closing position by negative pressure generated in the fertilizer supplying route by natural flow-down of the remaining fertilizer. COPYRIGHT: (C)2006,JPO&NCIPI
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