| 摘要 |
PROBLEM TO BE SOLVED: To reduce a load of work for supplying a chemical to soil covered with a mulch film. SOLUTION: A chemical feed machine is equipped with chemical supply channels 37, 38 joined to a chemical container 36, a nozzle 25 attached to an end of the chemical supply channel 38 and having a discharge opening 25a, a pump 30 interposed between the chemical supply channels 37, 38 and conducting suction/discharge by reciprocating motion, a stop plate 24 positioned above the discharge opening 25a of the nozzle 25 and connected to the pump 30, and spindle parts 21, 22 which are fastened to the stop plate 24 and between which an expanding and contracting part 33 is interposed. When the stop plate 24 is pressed on the mulch film F positioned on a surface of the soil D, the spindle parts 21, 22 are contracted by means of the expanding and contracting part 33, and simultaneously the stop plate 24 is upward thrust, so that the pump 30 operates to discharge the chemical in the soil through the discharge opening 25a of the nozzle 25. COPYRIGHT: (C)2005,JPO&NCIPI
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