临汾果树场于1992年春定植短枝型苹果品种34.8亩,成活率99.5%,生长健壮.但大多数树只发1—3个长枝,且树体一半发长枝另一半发短枝,呈偏斜树形.这对于幼树早果早丰极为不利.发枝多,叶片多,光合作用能力强,制造有机养分多,既可促进幼树快长树,又能满足早果丰产的需要.为此,我们试用了发枝素来促进幼树萌发长技,增加叶量,加速整形,取得了明显效果. Linfen fruit tree field in the spring of 1992 sprigged 34.8 acres of apple varieties, survival rate of 99.5%, robust growth, but most of the trees only 1-3 long branches, and the other half of the long branch of the tree hair sprung, was Skewed tree shape, which is very unfavorable to the young fruit early fruit harvest, more branches, more leaves, more photosynthesis ability, more organic nutrients, can promote young trees grow fast trees, but also to meet the needs of early fruit yield To this end, we have experimented with dendrimer to promote young trees grow long skills, increase the amount of leaves, speed up plastic surgery, and achieved remarkable results.