本试验以宫崎短富、青富、丹霞、嘎拉、乔纳金、花冠等6个苹果品种为试材,研究了无公害化学疏花剂对它们的疏花效果。结果表明在各苹果品种的中心花盛开后第3天和第5天分别喷布1次,可以起到保留顶芽中心花,疏除大部分的顶芽侧花和腋花的目的。浓度在5g/L~20g/L之间均能达到疏花的效果,随着浓度增高,疏除率呈上升趋势。 In this study, six apple cultivars, Miyazaki short rich, Qing Fu, Danxia, ​​Gala, Jonathan, Corolla, were used as materials to study the effect of non-polluting chemical thinning agents on their thinning. The results showed that the apple flowers were sprayed on the 3rd and 5th days respectively after the center flower was in full bloom, which could be used to retain the top bud center flower and sparse most of the top bud lateral flower and axillary flower. The concentration of 5g / L ~ 20g / L can achieve the effect of flowering, as the concentration increased, the rate of increase increased.