PP_(333)又名“多效唑”,是一种高效、作用期较长的抑制剂,目前已被大多数果农应用于抑制营养生长,促进生殖生长,以迅速提高产量。但有些果农对PP_(333)误以为施用量越多越好,盲目超量施用,结果造成本来很强壮的结果树,新梢抽生量很少,短果枝和花束状果枝量过多严重超过负载量结果,致使树势过早衰弱;中庸树和弱树几乎抽不出新梢,满树皆是花芽,叶片纵向凹卷,叶色淡绿而发灰,极大地缩短了盛果 PP 333 also known as paclobutrazol is a highly efficient, long-acting inhibitor, which has been used by most fruit growers to inhibit vegetative growth and promote reproductive growth in order to rapidly increase production. However, some fruit farmers mistakenly thought that PP_ (333) had the better application rate and blindly over-applied. As a result, they were already very strong and had a lot of shoots and shoots with too much fresh shoots The results of the load, resulting in premature weakness of the tree vigor; moderate tree and weak tree almost can not afford to shoot the new shoots are full of trees are flower buds, vertical concave roll leaves, light green color and gray hair, greatly reducing the Sheng fruit