已经布满架面的大棚架葡萄,容易出现前强后弱不稳定现象.而且由于枝蔓过长过多,埋上防寒和出土上架都很不方便,对此,我们用以大换小的方法进行改造。步骤是:①在生长季内选留自地表的萌蘖2～3个,及时引缚上架,8月中旬左右摘心,冬剪时适当长留;②选1个伸到前边的老主蔓,把长在后 Already covered with shelves of the scaffolding, vulnerable to weak and unstable before the strong phenomenon. And because too long branches and dendrites, buried cold and unearthed shelves are very inconvenient, for which we use the method of large change To transform. Steps are: ① in the growing season choose to stay from the surface of the sprout 2 to 3, timely lead tied shelves, around mid-August topping, winter cut appropriate long stay; ② choose a stretched to the front of the main vine, After the long