公路两旁栽植树木,是为了稳固路基、美化路容、防止风沙、大雪和洪水的侵害。增进行车的安全与舒适。自从全国农业发展纲要(草案)和中华人民共和国交通部公路绿化暂行办法公布以后,广大公路职工和人民?众绿化“路旁”的积极性十分高涨。根据全国23个省的不完全统计,到1956年上半年止栽植的公路行道树已达3200万余株。但是,一般说来。树木的成活率较低,23个省的平均成活率为68％,最低的仅及40％。从技术上分析,造成成活率低的主要原因是树种选择不当、未能严格遵守种植操作规程、抚育不善或养护工作不够经常等所致。如:有些省栽植的树苗仅有三、四 Trees planted on both sides of the road is to stabilize the roadbed, beautify the road content, to prevent sand, snow and flood infringement. Improve driving safety and comfort. Since the promulgation of the National Outline for Agricultural Development (draft) and the Interim Measures for Highway Afforestation by the Ministry of Communications of the People’s Republic of China, the enthusiasm of the broad masses of highway workers and people in afforesting the “roadside” has been very high. According to the incomplete statistics of 23 provinces in the country, more than 32 million road trees have been planted by the first half of 1956. However, in general. The survival rate of trees is low, the average survival rate of 23 provinces is 68%, the lowest is only 40%. From the technical analysis, resulting in low survival rate is mainly due to improper tree selection, failure to strictly comply with the planting practices, poor care or maintenance work is not often caused. Such as: some provinces planted saplings only three or four