根据湖南夏、秋两季干和热同期发生的特点，通过生化培养箱对冷季型草坪草进行轻干热和强干热处理，测定其浸泡液的电导率变化，结合自然干热条件下的表现，比较冷季型草坪草属间与种或品种间的耐干热性能的差异．结果表明：冷季型草坪草耐干热性能属间存在极显著差异，供试的４个属草种中，耐干热性能的强弱的顺序依次为：羊茅草属、早熟禾属、黑麦草属、翦股颖属．同属内种或品种间也存在着显著差异，爱瑞、猎狗、歌莱德、纳苏等表现良好．测试结果与田间观测表现一致，因此认为，测定电导率是检测草坪草抗干热的一种简便、快速、有效的方法 According to the characteristics of stem and heat occurrence in summer and autumn in Hunan, the cold-season turfgrass was light-heat and strong-heat-treated by biochemical incubator, and the conductivity of soaking solution was measured. Combined with the natural dry-heat condition Performance, the cold-season turf grass genus or species between the resistance to dry heat performance differences. The results showed that the dry-heat resistance of cold-season turfgrass was significantly different. Among the four genus tested, the order of resistance to dry-heat was as follows: fescue, bluegrass, black Wheat grass genus Within the same species or species also exist significant differences between love Rui, Hunting dog, song Ryder, Nasu and other good performance. The test results are consistent with the field observations, so that the determination of conductivity is a simple, rapid, and effective method for detecting turfgrass resistance to dry heat