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多效唑是一种可以延缓植物生长的化学药剂，目前已广泛应用于多种果树生长和结果的调控。据报道，应用多效唑具有抑制葡萄新消生长、缩短新梢节间长度、增加叶片厚度、提高坐果等作用．但因葡萄品种、施用时期、方法、药剂浓度等差异，其效果不尽相同。目前，国内尚未见到多效
Paclobutrazol is a chemical that delays plant growth and is now widely used in the regulation of many fruit tree growth and outcomes. It has been reported that the application of paclobutrazol inhibits the growth of new shoots, shortens the length of new shoots, increases the thickness of the leaves and improves the fruit setting. However, due to differences in grape varieties, application period, methods, drug concentration, etc., the effects are not the same. At present, China has not seen much effect