公路绿化有这样两种情况:一种是片面理解“普遍绿化”、“先绿化后美化”的方针,采取“有什么树种什么树”的作法,致使速生和容易繁殖的“大路货”树种,几乎占据了全部公路绿化的地盘。例如北方有些地区千篇一律的种植杨树,而当个别路段需要重点点缀时,往往因为苗木品种单调而无法实现 Highway greening has such two situations: one is to unilaterally understand the principle of “universal greening” and “greening first and beautifying land”, take “what tree is there and what tree” approach, and bring about quick-growing and easy-breeding “road goods” Occupy all the highway green site. For example, in some parts of the north, poplars are planted monotonously, and when the individual sections need to be heavily embellished, it is often impossible to achieve the monotonous seedling varieties