1, transplantation: Koelreuteria paniculata is a deep-rooted tree species; It takes several transplants to form a good and effective root system. Because the trunk of Luan tree is not easy to grow straight, it is necessary to cut off the stubble at the first time and strengthen the management of fertilizer and water. In spring, branches grow from the base, and those straight and strong branches are selected and cultivated into trunk, and then the trunk grows quickly and straight. If the first interception does not meet the requirements, it can be intercepted again in the spring of the following year. The young trees of Luan tree grow slowly, so the first two transplants should be properly densely planted, which is conducive to cultivating straight stems and saving land. After that, it should be properly sparse and cultivated well.

2. Fertilization: Fertilization is an important measure to cultivate strong seedlings. At the peak of annual growth; Nitrogen-based quick-acting fertilizer should be applied to promote the vegetative growth of plants. In autumn, nitrogen fertilizer should be stopped and phosphorus and potassium fertilizer should be applied to improve the lignification degree of plants and the cold resistance of seedlings. It is suitable to apply farm organic fertilizer as base fertilizer in winter, which can not only provide continuous nutrients for seedling growth, but also play a role in heat preservation and soil improvement.

3. Shaping and pruning: the crown of Luan tree is nearly spherical and the tree shape is regular, generally using natural tree shape. Due to different uses, its plastic requirements are also different. Courtyard shade trees require a large and dense crown, and the height of primary branches is lower than that of street trees. In the process of cultivation, corresponding pruning measures should be taken around the above requirements. Generally, it can be done in winter or during transplantation.