近年来,高速公路园林绿化建设日新月异,全国相继建成一大批高等级高速公路绿色通道,成为全国绿色通道建设体中的“精品工程、窗口工程、形象工程”。但目前部分地区、单在养护工作中,没有考虑到高速公路绿化的特点,不能科学、系统地进行养护,造成绿化效果和绿化质量明显下降,严 In recent years, the construction of expressway landscaping is changing with each passing day. A large number of green expressways of high-grade expressways have been built throughout the country and become the “fine project, window project and image project” in the construction of the national green passage. However, some areas nowadays do not take into account the characteristics of expressway greening in conservation work alone, and can not conduct scientific and systematic conservation, resulting in a marked decline in the afforestation effect and greening quality.