随着人民群众绿化环保意识的不断提高,现在家庭园艺对栽培花卉的要求越来越高,过去的栽培品种多是以三色堇、仙客来、月季为代表的小型花卉,现在已转为兼顾观赏、食果或绿化、遮阴等多重功效的大型树种,如紫叶李、紫叶桃、桂花、广玉兰、葡萄、杨梅、樱花树等。要想使庭院树木生长旺盛,施肥是很重要的措施。一般植物所需营养元素有很多,其中氮、磷、钾3种元素最为重 With the ever-increasing awareness of afforestation and environmental protection among the people, there is an increasing demand for cultivated flowers and gardening from home gardening. In the past, most of the cultivated cultivars were small flowers represented by pansy, cyclamen, and rose, which have now turned to Take into account the ornamental, fruit or greenery, shading and other multi-effect large tree species, such as purple leaf plum, purple leaf peach, sweet-scented osmanthus, magnolia, grape, bayberry, cherry tree. To make the garden trees grow vigorously, fertilization is a very important measure. The general plant nutrients required are many, including nitrogen, phosphorus and potassium three kinds of elements most important