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一、前言随着我国城市建设的发展,园林绿化美化工作已成为城市建设的一个重要组成部分,宿根花卉的逐年推广与应用,更大大地扩大了城市绿化的范围,提高了绿地的质量。荷兰菊是紫菀属(Aster)优良观赏花卉,也是一种重要的宿根花卉,它性耐寒、耐旱,适应性强,而且株丛密茂,花色丰富多彩,花多色艳,在欧美各国均有栽培,是我国北方城市美化和国庆节布置各类花坛不可缺少的种类。紫菀属植物约B00种,原产欧、亚、美,广布温带地区,我国约产100种,常见栽培的荷兰菊
I. Introduction With the development of urban construction in China, landscaping and landscaping has become an important part of urban construction. The promotion and application of perennial flowers has greatly expanded the scope of urban greening and improved the quality of green space. Dutch aster is an ornamental flower of the genus Aster, which is also an important perennial flower. It is hardy, drought-tolerant and adaptable. The plant is densely covered with rich and colorful flowers and colorful flowers. In Europe and the United States, With cultivation, it is an indispensable category for the beautification of the northern city of our country and the arrangement of various flower beds for the National Day. About 100 species of purpurea, originating in Europe, Asia, the United States, the broad temperate regions, about 100 species of cultivars in China, common cultivated Dutch chrysanthemum