Maintenance of Platanus acerifolia: If the roadside trees are overgrown with weeds, turn over the stubble to weed every year. In case of drought, water, loosen the soil first, open a shallow ditch around the trunk, water 1 time, and then loosen the soil. Apply base fertilizer every winter and topdressing from June to July. Prune according to the tree shape after planting. Cup-shaped street trees should be pruned within 4-5 years after planting. When pruning, the long branches, overlapping branches, drooping branches, dead branches and branches with pests and diseases should be thinned out, and the branches with short joints extending outward should have buds under the incision. When pruning, we should cut off the strong branches and the weak branches to promote the branches to expand upward and outward, so as to increase the shade area of the crown. Typical cup-shaped street trees generally have 5 ~ 6 levels of lateral branches, and the crown height is controlled below the power line 1 ~ 1.5 meters.