一些重酸性立壤的南方花木，如山茶花．褥子、白兰．茉莉、米兰和最近几年新引进的南方花木，在北京地区栽植．绝大部分因北京地区的土质偏础和水溶性铁的不足，而生长不民，县至养一段时间逐渐退化．死亡。解决的刃＼迭，通常是用矾肥水浇灌。但是，矾肥水的配制主要用硫酸亚 Some of the acid plants in the southern flowers, such as camellia. Mattress, Prynne. Jasmine, Milan and the newly introduced southern flowers in recent years, planted in Beijing. For the most part, due to the lack of soil quality and water-soluble iron in Beijing, the growth was not good, and the county was gradually degenerated for a period of time. death. Resolved blade Diego, usually with alum fertilizer irrigation. However, the preparation of alum fertilizer mainly with sulfuric acid Asia