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杜鹃花属的植物,广布于北温带及亚洲的亚热带和热带地区的高山上。全世界有800多种,8000～10000个品种,原产我国的野生种大约有600余种。除了新疆无杜鹃花的天然分布外,广布于我国各省,以西南地区为最多,是杜鹃花属的世界分布中心,我国的西南和中南地区,是世界上闻名的杜鹃花资源宝库。可是,栽培的杜鹃花至今并不普遍,除了四川省等少数城市之外,都还限于盆栽或室内培养。为了改进城市的绿化面貌,还应充分利用野生杜鹃花资源。目前,东北地区的野生杜鹃花只有兴安杜鹃、照白杜鹃等,在早春开花之前,除了人们到山里采回来,或从市场买回来作为插花用,或者个别人进行引种栽培实验(成活率很低)外,其他种类张少有人研究。
Rhododendron plants, widely distributed in the northern temperate and Asian subtropical and tropical high mountains. There are more than 800 species and 8,000-10,000 varieties in the world. There are about 600 wild species native to China. Except for the natural distribution of azalea in Xinjiang, it is widely distributed in all provinces of our country and southwest. It is the world distribution center of Rhododendron, southwest and south central region of China, and is the treasure house of the world famous azaleas resources. However, cultivated rhododendrons are not common until now, except for a few cities such as Sichuan Province, which are still limited to potting or indoor cultivation. In order to improve the city’s greenery, wild rhododendrons should also be fully utilized. At present, only wild rhododendrons in northeast China are rhododendron rhododendrons, rhododendron rhizomes and so on. Before the flowering in early spring, except for people coming back to the mountains or buying them back from the market for flower arrangement or individual introduction and cultivation experiments (the survival rate is very low ), Few other types of Zhang study.