硫酸锌对山楂幼树新梢加粗、加长生长有显著的刺激效应，同时能显著地提高新梢叶片的百叶鲜重、百叶厚及百叶面积。随着赤霉素浓度的提高，对幼树新梢加粗、加长生长的刺激效应也逐渐提高，而新梢百叶鲜重、百叶厚及百叶面积的增加量逐渐减弱。试验表明，２００～３００倍硫酸锌、２０～４０ｍｇ／Ｌ赤霉素是山楂幼树应用推广的适宜浓度。 Zinc sulfate on the young shoots of hawthorn thicker, longer growth has a significant stimulating effect, at the same time can significantly increase the shoot tip leaves fresh weight, leaf thickness and louver area. With the increase of gibberellin concentration, the stimulating effect of thickening shoots and lengthening growth of young saplings also gradually increased, while the increment of fresh shoots per leaf fresh weight, leaf thick and the area of ​​blinds gradually weakened. Experiments show that 200 ~ 300 times zinc sulfate, 20 ~ 40mg / L gibberellin is applied to promote the appropriate concentration of hawthorn saplings.