以盆栽实验研究了镉对大豆苗期素质的影响及镧的防护作用。实验结果表明，每钵根施１００ｍｇ氯化镉会严重抑制大豆幼苗生长；而先期一次性叶片喷布３０ｍｇ／ＬＬａＣｌ３能明显减轻镉造成的伤害。 Pot experiments were conducted to study the effects of cadmium on soybean seedling quality and the protective effect of lanthanum. The results showed that applying 100 mg cadmium chloride per pot would seriously inhibit the growth of soybean seedlings. However, 30 mg / LLaCl3 pre-treatment with one-off leaves could obviously reduce the damage caused by cadmium.