| Mass use of soil resources by constructing highway project, especially the effect of cut slope of a hill and topography cause soil and water erosion by the roadbed and cutting of the highway side slope and disadvantageous effect on the peripheral ecological environment.Highway afforestment and soil and water conservation is a new problem of road afforestment. The slope protection includes engineering protection and. To exert engineering protection and biological protection merits respectively, Combining engineering protection with biological protection ensure the slope stability, vegetation resume and environment beautification.According to the specific property of the red-rock,using campare tests, study the key technology of the road slope protection.Find the plants and the planting ways;grass and the rate;the season to plant and the biological protection on different slope.On the basis of analyzing the result of field experiment and field survey, and the experience of biological protection test and design on landscape ecological afforestment construction of highway in Hunan Province.The paper summarizes principle and technology process of biological protection on red-rock slope of road in the medium sub-tropical area, and the slope classifications application to the protection technology. The study will fill up the blank of the biological protection on red-rock slope of road.The study is a good reference to design and construction of side slop biological protection in the process of highway construction. It will have important theory value and direction of practice. |