| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily remove a plug from a tine, wherein the plug is formed in the tine by driving the tine into the ground. Ž<P>SOLUTION: The tine 100 has a hollow cylindrical tine body 110 having an opened tip end 112. An opening 114 extending in the longitudinal direction of the tine body 110 is formed on the circumference of the tine body 110, and the opening 114 has a circumferential angle of ≥180° and ≤210° using the center axis of the tine body 110 as the center. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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