| 摘要 |
A nitrate-nitrogen-reducing agent for a farm product, comprising as an active ingredient a hydroxide solid solution represented by the formula (1),
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ[(M 1 2+ ) 1-x (M 2 2+ ) x ] 1-z (M 3+ ) z (OH) 2 (A n- ) z/n ·mH 2 O
wherein M 1 2+ represents Ca and/or Mg, M 2 2+ represents at least one mineral selected from Fe, Mn, Zn, Cu, Ni and Co, M 3+ represents at least one trivalent metal, A n- represents an anion having a valence of n, 0 < x < 0.5, 0 ‰¤ m < 10, 0 < z < 0.4, and 1 ‰¤ n ‰¤ 10,
and/or the formula (2),
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(M 1 2+ ) 1-x (M 2 2+ ) x (OH) 2
wherein M 1 2+ , x and M 2 2+ are as defined in the formula (1). |
