试验选用沙打旺、无芒雀麦等７ 种牧草设六个混播组合进行高速公路边坡绿化技术探讨。通过对各草种组合的密度、生长高度、盖度、水土保持效果等指标的测定分析，表明由３ ～４ 个草种组成的混播草地护坡绿化效果最佳，播种时应适当加大播种量，４ 月下旬至５ 月上旬播种能在短期内覆盖地面，并起到较好的护坡绿化效果。 Seven kinds of grasses, such as Astragalus adsurgens and Bromus inermis, were selected to test the greening techniques of highway slopes. Through the analysis of the indexes of density, growth height, coverage, water and soil conservation effect of each grass species combination, it shows that slope protection and afforestation effect of mixed grassland composed of 3 ~ 4 grass species is the best, sowing time should be appropriately increased , Sowing from late April to early May can cover the ground in a short time and play a good role in slope protection and greening.