摘要
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 sulphate was found effective in stimulating the growth of hawthorn shoots.And it could significantly increase the leaf weight,leaf thickness and leaf area. With higherconcentration of gibberellin,its stimulating effect on theshoots growth in young trees wasfound stronger.However,the increase of leaf weigh,leaf thickness and leaf area was gettingsmaller,Experiment showed that the 200～300 times diluted zinc sulphate and 20～40 mg/Lof gibberellin were suitable for young hawthorn trees.
关键词
硫酸锌
赤霉素
山楂
扩冠增枝
效应
zinc sulphate
gibberellin
hawthorn
enlargement of crown and branch
