| 摘要 |
PROBLEM TO BE SOLVED: To provide a soil injector that is easy to handle in no need of powered injection, can exactly inject agrochemical solutions and/or liquid fertilizers of needed amounts to target positions and can directly apply them even in their concentrated forms. SOLUTION: A liquid injection tube 14 is composed of an outer cylinder 18 that constitutes its uppermost side and a soil-insertion cylinder 19 that constitutes the lowermost side. A pumping mechanism is built in the outer cylinder 18 so that it comprises an inlet valve for back flow prevention 20, a compression spring 21, and a delivery valve that are arranged at the upper part, the middle part and the lower part, respectively. Further, a cylinder 19 for soil insertion is fitted at its uppermost side beneath the pump to form a route transport the power from the outer cylinder 18 via its compression spring 21 to the soil-insertion cylinder 19.
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