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在內蒙古自治区首府所在地——呼和浩特北面大青山上,有很多绿化荒山荒地的樹种,其中有山杏、林青、山杨等等。我在此山尋找樹木种源时,發現一种白皮杨(也就是河杨),生長在山区和半山区的侵蝕沟內。这种樹比平川地小叶杨生長的快,樹干通直,樹叶的生長形狀是長圓形,顶部有尖,上下两面光滑,用肉眼观察看不见小毛孔;樹叶的背面是浅綠色,正面是黃綠色。
In the seat of the capital of the Inner Mongolia Autonomous Region - north of Daqing Mountain in Hohhot, there are many tree species of green barren hills and wastelands, among them there are armeniacae, linqing, aspen and so on. When I looked for the provenance of trees in this mountain, I found a kind of white poplar (also known as Populus euphratica) growing in the erosion ditch in the mountains and mid-levels. This tree grows faster than flat-leafed poplar, trunk straight, the growth of the leaves are oblong, the top of the tip, the upper and lower sides smooth, with the naked eye can not see the small pores; the back of the leaves is light green , The front is yellow-green.