The invention relates to a cultivation method of cluster Chinese
tallow trees, the cultivation method comprises the steps that a
sodium azide mutagenesis solution is added into Chinese
tallow tree seeds, then the seeds are planted in a
salt pond, salt-tolerant mutants are screened out,
irrigation and fertilization are conducted on seedlings in the mode of leaning one sides, and root systems of theseedlings are distributed in oval shapes with sparse ends and flourishing ends in soil balls; and a plurality of seedlings are circumferentially arranged in sequence and spliced and clustered again,large roots at the sparse ends of the soil balls are crossed and spliced, and then clustered Chinese
tallow trees with good conditions are obtained through clustered shaping, supporting and fixing,
pruning and shaping and regular maintenance. According to the cultivation method,
sodium azide is selected as a salt-tolerant clustered Chinese tallow
tree breeding mutagenic agent, damage to mutagenicseeds is small, salt-tolerant genes of Chinese tallow trees can be fully expressed, and
drought resistance and dry hot air resistance can also be fully expressed; then
irrigation and fertilization areconducted on the seedlings in the mode of leaning one sides, so that the sparse ends and the flourishing ends are generated at the roots of the Chinese tallow tree seedlings; and then, soil ball digging and
cutting are carried out on the Chinese tallow tree seedlings, and splicing planting is carried out with dense seams, so that the spacing among the seedlings is effectively reduced, bending andcompressive death of the seedlings are avoided, and the ornamental effect of round crowns of the clustered Chinese tallow trees is guaranteed.