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研究了稀土元素在羊草（Ｌｅｙｍｕｓｃｈｉｎｅｎｓｉｓ）体内的富集、分布和对几种牧草种子萌发的效应．稀土溶液不同喷施次数的试验结果表明：羊草根、茎、叶内的稀土元素含量与稀土溶液喷施次数表现为正相关关系．多年喷施稀土溶液试验结果表明：稀土元素在羊草体内的富集作用不明显．稀土溶液对羊草等六种牧草种子萌发试验结果表明：稀土溶液浓度为６００μｇ／ｍｌ时，种子发芽率最高，浓度为８００μｇ／ｍｌ以上时，对种子萌发有抑制作用
The enrichment and distribution of rare earth elements in Leymus chinensis and the effects on the germination of several forages were studied. The results showed that the contents of rare earth elements in the roots, stems and leaves of Leymus chinensis were positively correlated with the spraying times of rare earth solution. Rare earth solution sprayed for many years test results show that: rare earth elements in Leymus chinensis enrichment effect is not obvious. The result of germination test of rare earth solution on the seeds of six forage grasses showed that the seed germination rate was the highest when the concentration of rare earth solution was 600μg / ml. When the concentration was above 800μg / ml, the seed germination was inhibited