为估算边坡绿化养护的浇水频率,以京承高速公路3期为例,采用环刀测试土壤含水量的方法,对2个不同坡向边坡共6个坡位的基质田间持水量、基质水分变化速率以及试验边坡4种优势植物的萎蔫系数分别进行调查。根据测试指标的调查结果,浇水频率的估算结果为6个坡位之间的浇水频率为1次～1次/10 d不等,从每个边坡3个坡位浇水频率的平均值来看,阳坡和阴坡的平均浇水频率都约为1次/13 d。将估算结果在实践中进行验证,充足降雨后,调查发现约13～15 d后植物发生萎蔫,不能维持正常生长。浇水频率的理论估算结果与实践验证结果基本相吻合,浇水频率的估算方法在岩石边坡绿化养护中具有理论指导意义。 In order to estimate the watering frequency of slope afforestation and conservation, taking the Jingcheng Expressway No.3 as an example, the soil water content was measured by ring cutter method. The field water holding capacity of 6 slope positions with 2 slopes, The change rate of substrate moisture and the wilting coefficient of four dominant plants on the slope were investigated respectively. According to the test results of the test indicators, the watering frequency was estimated as the watering frequency of 6 slope positions ranging from 1 time to 1 time / 10 days. From the average watering frequency of 3 slope positions of each slope In terms of values, the average watering frequency for both sunny and shady slopes is about 1 time per 13 days. The estimation results were verified in practice. After sufficient rainfall, the survey found that the plants wilted after about 13 to 15 days and could not maintain normal growth. The theoretical estimation results of watering frequency basically coincide with the results of practical verification. The method of estimating watering frequency has theoretical significance in the greening of rock slope.