Some climatic factors affecting the yield of Elymus sibircus CV TongDe in TongDe were studied.The result showed that among three climatic factors tested the precipitation was the key factor.

• 对影响同德老芒麦牧草产量的主要气候因子进行了研究,结果表明,降水是影响同德老芒麦牧草产量的关键因子。