The effects of plastic elements on peach trees are as follows: ① Promoting the formation of flower buds and reducing the nodes of peach bud differentiation, which is especially important for varieties with high flower bud formation. ② Weaken the apical dominance, reduce the growth of extended branches, promote the germination of lateral branches, and make the tree compact and short. ③ It has the dual functions of promoting fruit setting and thinning, which varies with the use period and concentration. ④ Promote early coloring and ripening of fruits, increase sugar content and improve fruit quality.

The results showed that when the new shoots of peach trees grew to 10 ~ 20cm, about 3 weeks after flowering, they were treated with 1 ~ 2 times of plastic C solution at intervals of 3 weeks. It can control the vigorous new shoots of peach trees, make the upright branches bend and elongate, branch and flower bud occur under the bending parts, reduce the branching parts and flowering parts on the branches, advance the coloring period of peach fruits by more than 1 week, increase the coloring area by 34.6%, and advance the harvest by 3-5 days, thus improving the economic benefits by 15%-30%.