As a compulsory greening method, spray seeding technology has been widely used in my country's high-grade highway construction, railway construction, and large-scale soil and water conservation projects in recent years. There are two main modes of spraying technology in the world. One is the hydraulic spraying technology represented by the United States; the other is the soil spraying technology represented by Japan. In my country, due to the early introduction of hydraulic spraying technology, wide application, and relatively simple process flow, the domestic construction team has mastered the technology relatively maturely and has carried out the improvement and improvement of technology and technology. Soil spraying technology has also entered the stage of large-scale introduction in my country in recent years. Because this technology can better solve the problems of vegetation restoration that are difficult to solve by conventional methods, such as rock slopes, gravel excavation and filling slopes, hard soil sandy land, barren soil, acid soil, high salinity soil, etc. The prospects are very broad. Although this technology has a large one-time investment, it can fundamentally solve the problem of vegetation restoration.
Soil spraying machine technology is an emerging comprehensive technology, involving many disciplines. Mainly involved in soil science, botany, plant ecology, garden planning, rock mechanics, fluid mechanics, and other disciplines. The key point of this engineering technology is to restore vegetation. For the rock slope to be constructed, not only should the stability of the slope be ensured, but also the natural vegetation landscape of the surrounding environment should be considered, so as to build low maintenance coordinated with the surrounding environment. Horizontal permanent slope protection works. It requires that in the specific operation process, the principle of ecological succession of plants should be followed, and the links of natural succession should be reduced through artificial action so that it can quickly form an artificial ecological landscape that is in harmony with the surrounding natural landscape.
The principle of foreign soil spraying technology is based on the dense structure formed by high-order granules, foreign soil, and plant fibers, thus forming a good combination with the rock slope, strong resistance to rainfall erosion, firm and breathable, and good air permeability. Water absorption and water retention capacity, the plant growth foundation similar to the natural topsoil, by driving the anchor rod (anchor cable or anchor pile) on the rock slope, and after hanging the three-dimensional net on the anchor rod, the mixed planting matrix is ​​mixed with planting matrix. Spraying completed. The main technological process includes: cleaning and leveling the slope surface (removing dangerous rocks, gravel, etc.), drilling the slope surface, installing the anchor rod, hanging the three-dimensional net, deploying the base material for spraying, spraying the plant matrix, spraying the mixed plant seeds, Pre-maintenance management, etc.

In the ratio of hydroseeding, also broke through the formula of simply using herbs, but added a certain proportion of tree and shrub seeds, thereby reducing the natural succession of vegetation, forming a more stable and natural combination of trees, shrubs, and grasses. The landscape vegetation has truly achieved the vegetation restoration of the rock slope.