一、概 况 南阳地处豫西南,与湖北毗邻,全区十三个县(市),除南召、西峡两县为秦巴山润湿区外,其余均为江淮丘陵润湿区(Ⅳ_2区),素有南阳贫地之称。全区河流纵横,大部丘陵地州多产姜石,原有公路路面多为姜石路面。从七十年代改建黑色路面时,大部分 I. Introduction Nanyang is located in the southwest of Henan Province and adjoins Hubei Province. Thirteen counties (cities) in the region except the Nanba and Xixia wetlands are Qinba Mountain wetting areas, and the rest are wetting areas of JAC hills (Ⅳ_2) , Known as poor in Nanyang said. The region vertical and horizontal rivers, most of the hilly state more ginger, the original road surface mostly ginger stone pavement. Most of the remodeled black pavement from the seventies