湖南山区高速公路生态防护适宜的植物

Plant Species for Ecological Protection of Expressway in Hilly Area of Hunan Province

笔者结合湖南邵阳至怀化高速公路,初步筛选出适合本地区边坡防护的植物树种,运用植物的物候期、适应性、群落特征和水土侵蚀量等指标作为筛选标准,筛选出适合高速公路边坡的草本植物和木本植物,通过实验综合表现最为优良的草本植物为狗牙根,其次为结缕草,而紫花苜蓿、白三叶等植物由于其出苗率高前期生长迅速等特点,可以作为草本混播的先锋植物。木本植物中,综合表现最为优良的是刺槐、多花木蓝、马棘。

The suitable plant species have been selected during the construction of Shaoyang-Huaihua Expressway in Hunan province, taking plant phenophase, adaptability, community characteristics and soil erosion indicators as selection criteria, some suitable herbs and woody plants have been selected for the highway side slope protection, the most excellent herb is Cynodon dactylon, followed by Zoysia ja-ponica, and alfalfa and white clover plants can be a pioneer plant herb mixed with other plants because of its rapidly growing in early period and high germination rate. For woody plants, the most excellen ones are Robinia pseudoacacia L, Indigofera amblyantha Indigofera pseudotinctoria.