The aim is to investigate the effect of lanthanum on membrance permeability and content in root exudation,then provide the reference data for the safe application of RRE in agriculture.

• 目的在于探讨水稻根系在单一稀土镧胁迫条件下根质膜透性和根系分泌中组分的变化情况，寻求敏感式特征分泌物，为稀土农用的安全性评价提供参考数据。