目前我国各地幼年苹果种植面积很大,但往往生长旺盛,枝条徒长,树形紊乱,累积养分少,不易形成花芽,结果较晚,部分早期结实的植株生长势也很弱,如能采取有效措施,保证幼树迅速扩大树冠,又能提早结果,早期丰产具有重大经济意义。 At present, young apple growing area in our country is very big, but often grow vigorously, the branches are long, the tree is disorderly, the accumulated nutrients are less, the flower buds are not easy to form, the result is late, the early part of the strong plant growth potential is very weak, if we can take effective measures , To ensure that young trees quickly expand the crown, but also early results, early high yield has great economic significance.