Cultivation method of dwarf seedless litchi crowns

The invention provides a cultivation method for dwarfing seedless litchi crowns. The cultivation method comprises the following steps that rootstocks are selected, specifically, root sections of 20 litchi varieties are selected as the rootstocks; seedless litchis are grafted, specifically, the seedless litchis are selected as scions, and the seedless litchi scions are grafted to stocks of different litchi varieties; management is conducted after grafting; tree bodies are compared, specifically, the root sections grafted with the seedless litchis is grown into fruiting trees, the heights of thefruiting trees corresponding to different litchi varieties are recorded, and it is judged that the height of the fruiting trees of the seedless litchis grafted by taking the pachyrhizus litchi variety as the root sections is lower within a fruiting number conforming range; sowing and seedling raising are conducted, specifically, seeds of the pachyrhizus litchi variety are collected and sowed in summer in the same year, seedlings are artificially grafted and raised in the next year, and outplanting is conducted in the third year; and batch planting is conducted. The pachyrhizus litchi varietyis selected for seedling raising and grafted with seedless litchis, the tree body can be dwarfed, close planting is facilitated, and the yield per unit area is increased.