试验以5年生‘红地球’葡萄为试材,研究不同浓度PP333处理对其新梢生长和坐果的影响。1年的结果表明:4个浓度的PP333均能明显地抑制新梢生长,提高坐果率,对副梢的抑制作用强于主梢。其中浓度为2000mg/L的坐果率最高,对副梢数量、节数、节间长度的抑制效果最明显。 In this experiment, we used 5-year-old ’Red Globe’ grapes as test material to study the effects of different concentrations of PP333 treatment on shoot growth and fruit setting. The results of 1 year showed that: PP333 at four concentrations could significantly inhibit the growth of shoots, increase the rate of fruit setting, and inhibit the shoots more strongly than the shoots. Among them, the highest fruit setting rate was 2000mg / L, and the inhibitory effect on the number of shoots, the number of nodes and internode length was the most obvious.