| 摘要 |
PROBLEM TO BE SOLVED: To provide a safe and inexpensive member capable of obtaining an effective reduction effect by taking a sufficiently large contact area between a ground rod and reducing agent, and provide a burying method for the ground rod. SOLUTION: After a hard top point member 1 having a sharp tip part 1a and a rear end part 1b with larger diameter than the diameter of a ground rod 4 is attached to the tip part of the ground rod 4, a space 3 is formed between the ground rod 4 and the ground 10 by knocking it into the ground from the bottom of a drilling hole 7 filled with reducing agent, and the reducing agent 5 is introduced in the space 3.
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