宁夏回族自治区成立４０年以来，首府银川的城市建设日新月异。从一个建国初期近３万人、城区面积不足５ｋｍ２的小城，发展成为拥有４５．４４万人口、城区面积４５．９７ｋｍ２的中等城市。但城市园林建设方面还存在一些亟待解决的问题，如园林植物种类还很贫乏，城市绿... Since the establishment of Ningxia Hui Autonomous Region for 40 years, the urban construction of Yinchuan, the capital city has been advancing rapidly. From a small city of nearly 30000 in the early years of the founding of New China with an area of ​​less than 5km2, it developed into a medium-sized city with 454,400 inhabitants and an urban area of ​​45.97km2. However, there are still some problems to be solved in urban garden construction, such as the types of garden plants are still scarce, the urban green ...