冷季型草坪草营养器官适宜的生长温度为 10～ 2 4℃。超出生长最适温度的高温使草坪草植株的生理代谢发生一系列的变化 ,例如 :细胞膜透性增大 ,一些对高温敏感的酶活性下降 ,代谢失去平衡 ,生长延缓 ,叶色退绿 ,甚至植株死亡。适度的热锻炼和适当的水、肥、修剪等管理有利于提高草坪草的耐热性。对化学物质的耐性调控和热胁迫信号转导等方面的研究 ,将有助于获得更多的耐热机理知识和改善冷季型草坪草在过渡地带的夏季草坪质量 Cold season turf grass vegetative organs suitable growth temperature of 10 ~ 2 4 ℃. Exceeding the optimum temperature for growth causes a series of changes in the physiological metabolism of turfgrass plants, such as increased permeability of the cell membrane, decreased activities of some enzymes sensitive to high temperatures, loss of balance of metabolism, delayed growth, retreat of leaf color, and even Plant died. Moderate hot exercise and proper water, fertilizer, pruning and other management help to improve the lawn grass heat resistance. Studies on the regulation of chemical resistance and signal transduction of heat stress will help to gain more knowledge about the mechanism of heat tolerance and improve the summer turf quality of cold season turfgrass in the transitional zone