海棠为我国特产花木。主要有贴梗、垂丝、木瓜、西府四种,属蔷薇科开花落叶灌木或小乔木。生态习性喜光耐寒,不择土壤,略耐碱上,北方栽培较多。根系入土浅,忌旱耐湿,但怕涝,常因水渍黄叶,甚至根烂株枯。适合排水良好而湿润的轻沙壤土上生长。一、繁殖与栽培。分株、压条、扦插、嫁接、 Begonia for our specialty flowers. There are sticky stems, silk, papaya, Xifu four, is a flowering deciduous shrub Rosaceae or small trees. Eco-habits Hi-light cold, do not choose soil, slightly alkali, the northern cultivation more. Roots into shallow soil, avoid drought and humidity, but afraid of waterlogging, often due to waterlogging yellow leaves, or even bad rot. Suitable for well-drained and moist light sandy loam soil. First, breeding and cultivation. Shrubs, Battens, Cuttings, Grafting,