The results showed that root activities were decreased, root/shoot ratio and IAA in the root and leaves were high, dry weight and ZR in the root and leaves were low.

• 结果表明，低磷胁迫下晒红烟的根系活力活性降低，根冠比及根和叶中生长素（IAA）含量均增加，干物质积累和细胞分裂素（ZR）含量则减少。