3D4am03 2026/03/11 09:24 一般講演 D4 Influence of planting density on Pteris vittata phytoextraction and change in soil arsenic availability ○ST Ahmad Abdi Raja Semesta Alam1 Ning HAN1 Keisuke MIYAUCHI2 Chihiro INOUE1 Mei-Fang CHIEN1 1Tohoku Univ., 2Tohoku Gakuin Univ. Arsenic / Pteris vittata / Phytoextraction