In 0, 0.1, 0.2, 0.4 and l. Omg Cd2+/L, except the control, the leaves of Rumex acetosa L became thin, yellow and had brown spots after the fifth day with Cd. The toxic symptoms in 1.0mg Cd2+/L were most serious.

• 酸模在Cd~(2+)浓度分别为0、0.；1、0