山荞麦系蓼科蓼属落叶蔓生缠绕植物。茎直立多分枝;叶片三角形或卵状三角形,全缘;托叶鞘短筒状,早落;顶生、腋生总状花序或圆锥花序,花梗细长,花白色略带清香;花期7～10月。喜光耐阴耐寒,抗干旱,适应性强,攀缘缠绕需加附属物,在肥沃湿润的土壤上生长会更加繁茂。1985年由山西引种到北京栽培,几年来试验表明,它是一种很好的垂直绿化材料。山荞麦在温室内硬枝扦插繁殖,成活率达80～90％,二、三年内就可发挥绿化作用。具体方法是①做床:把床土浅翻一次,深度达10～15厘米,并用粗筛筛一遍。上面覆盖2～3厘米厚的黄沙或粗砂(有条件者可把喷水设备固定好),再用800—1000倍的甲 Mountain buckwheat Polygonaceae Polygonaceae is a deciduous vine winding wound plants. Stems erect, much branched; leaf blade triangular or ovate-triangular, entire; stipules sheath short, caducous; terminal, axillary racemes or panicles, pedicel slender, floral white slightly fragrant; flowering July to October . Hi-light shade hardy, drought resistance, adaptability, climbing entanglement need to add appendages, growth in fertile and moist soil will be more lush. It was introduced to Beijing by Shanxi in 1985 and has been tested in recent years. It shows that it is a good vertical greening material. Mountain buckwheat hardwood cutting propagation in the greenhouse, the survival rate of 80 to 90%, two or three years can play a role in greening. The specific method is to do bed: turn the bed shallow once, the depth of 10 to 15 cm, and with a coarse sieve again. Covered with sand or grit 2 ~ 3 cm thick (the conditions can be fixed sprinkler), and then 800-1000 times a