The elementary conclusion is: Poa pratensis L is better than Festuca arundinacea Schreb in the cold tolerance.The Perennial Ryegrass is weak for resisting the cold damage.

• 结合田间实验，对所测试品种的抗寒能力做出初步结论是：总体上早熟禾的抗寒性要强于高羊茅，多年生黑麦草品种抗寒性最弱。