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1998～ 2 0 0 1年选择了百喜草等 13个种 2 1个品种 (或生态型 )的草种在四川省部分高速公路边坡上进行适应性试验 ,对其生物学特征、抗性和盖度等进行观测 ,采用 9分制对草坪质量进行评价和等级划分。初步筛选出适宜在四川省不同类型公路边坡实施植被恢复工程的主要建群植物种为狗牙根等 4个。提出了人工恢复边坡植被群落的物种组成应遵循的四结合原则 :细叶型和阔叶型结合 ,禾本科类和豆科类结合 ,丛生型和匍匐型结合 ,草本和小灌木结合。
From 1998 to 2001, we selected 13 species of 21 species (or ecotypes), such as hippocastanum, as test materials, and tested their suitability on the slopes of some expressways in Sichuan Province. Their biological characteristics, resistance And coverage were observed, using 9 points on the lawn quality evaluation and grading. Preliminary screening of suitable for Sichuan Province in the implementation of different types of highway slope vegetation restoration project of the main building groups of plants such as bermudagrass 4. The four principles of combination should be followed: the combination of fine leaf and broad leaf, the combination of gramineae and legume, the combination of tufts and creeping, and the combination of herb and shrub.