The invention discloses a method for cultivating a three-dimensional netlike fast-growing combined big tree. The method comprises the following steps of: 1, planting one to multiple circles of medium and small-sized arbors (bushes) around a central tree or a central point; 2, inserting, twisting,
grafting and binding the branches and stems of the trees from upper, lower, left, right, front, back, inner and outer parts timely and cultivating
multiple stages of branched tree crowns; and 3, performing track management such as
fertilizer application,
disease and
insect control, fixed-
branch, fixed-stem and oriented trimming,
bud picking and the like to grow the three-dimensional netlike fast-growing combined big tree. The method has the advantages that: 1, the problems of
resource scarcity of
greening big trees and protection of famous wood and ancient trees are effectively solved, the
survival rate of
greening big trees can be increased by 40 percent, and the resource cost is lowered by 50 percent; 2, the service and growing lives of the
greening big trees can be prolonged by at least 2-5 times; 3, the national forest resources and cultural relics can be effectively protected; 4, a novel way for artificial big trees is opened; and 5, the three-dimensional netlike fast-growing combined big tree has the comprehensive characteristics of singularity, culture, artistic quality, technicality, very high ornamental value and greening value, and the like. The exquisite special effect of the big tree contributes to urban development and progress of green ecological civilization.