通过对江西上分线改建公路边坡上应用香根草等高植物篱技术试验，表明在海拔 ２８０ ｍ～７５０ ｍ，不同土壤地质条件如花岗岩砂土、沙粒、岩粒沙土， ｐＨ ４．０—４．５，有机质 ０． ２％，公路边坡 ３２°～ ４９°上等高栽植，香根草成活率 ９８％以上。在公路边坡上等高种植香根草 ２个月后，平均分蘖３支～９．７支，平均生长高度３６．７ ｃｍ～７０．７ ｃｍ。能较快地形成等高植物 篱，发挥出防止侵蚀、稳定公路边坡的作用。 Through the application of vetiver contour hedgerows on the highway slopes reconstructed in Shanghai Shangdi Subway, it shows that under different soil geological conditions, such as granite sand, sand, rock and sand, pH 4 at 280 m ~ 750 m. 0-4.5, organic matter 0. 2%, highway slope 32 ° ~ 49 ° on the high planting, vetiver survival rate of 98%. After 2-month vetiver planting on the highway slope, the average number of tillers ranged from 3 to 9.7, and the average growth height was 36.7 cm to 70.7 cm. Can quickly form contour hedgerows, play to prevent erosion, stabilize the role of highway slopes.