多效唑 (PP3 3 3 )是一种植物生长抑制剂 ,通过干扰内源赤霉素的合成 ,抑制果树新梢营养生长 ,使新梢节间缩短 ,实现矮化集约栽培 ,达到早结果早丰产的目的。许多研究结果表明 ,多效唑应用于苹果、梨、桃、杏等果树均取得明显的效果。为探索多效唑对李树新梢生长的控制作用 ,摸 Paclobutrazol (PP3 3 3) is a plant growth inhibitor, by interfering with the synthesis of endogenous gibberellin, inhibiting the vegetative growth of shoots of fruit trees, shortening the shoots of new shoots, achieving dwarfing intensive cultivation, purpose. Many research results show that paclobutrazol applied to apples, pears, peaches, apricots and other fruit trees have achieved significant results. To explore the effect of paclobutrazol on the growth of plum shoots, touch