针对风沙对公路的不同危害形式,介绍了工程与生物防护措施,井对两种防护措施进行了对比,指出应结合本地区的自然条件和沙区特点,将两种措施区分主与辅,并以主辅结合的原则进行防沙。 In view of the different hazardous forms of wind and sand to the highway, the engineering and biological protection measures are introduced and the comparison between the two kinds of protection measures is made. It is pointed out that the two measures should be distinguished from the main and the auxiliary according to the natural conditions of the area and the characteristics of the sand area The principle of combining primary and secondary sand control.