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稀土元素镧处理使植物抗性增加，表现在：１．在盐胁迫条件下，镧可使植物的苗和根的长度、干重、鲜重、根体积、干／鲜比重、根／冠比增加。２．镧处理后植物对大量元素Ｎ、Ｐ、Ｋ、Ｃａ、Ｍｇ和微量元素Ｚｎ的吸收增加。在盐胁迫条件下镧对大量元素除Ｋ、Ｃａ外的其它元素都能起促进吸收作用。对微量元素，镧能促进Ｆｅ、Ｚｎ的吸收，对其它元素影响不大。３．在冷、热盐胁迫下，镧能使电导、ｐＨ变小，说明镧处理后细胞膜破坏程度减少，质子的分泌活动增强，根活性增强，植物抗逆性增加，而且逆境越恶劣、时间越长，抗逆性越强。
Rare earth elements of lanthanum plant resistance increased, manifested in: 1. Under salt stress, lanthanum can increase the plant’s seedling and root length, dry weight, fresh weight, root volume, dry / fresh weight, and root / shoot ratio. 2. After lanthanum treatment, the absorption of N, P, K, Ca, Mg and trace element Zn increased. Under salt stress conditions, lanthanum can promote the absorption of a large number of elements other than K and Ca. For trace elements, lanthanum can promote the absorption of Fe, Zn, little effect on other elements. 3. Under cold and hot salt stress, lanthanum could decrease the conductance and pH, which indicated that the destruction of cell membrane decreased, the proton secretion activity increased, the root activity increased, plant stress resistance increased, and the worse the adversity, the longer the lag treatment time , The stronger the resistance.