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双校更新是葡萄冬剪中常用的修剪方法之一，对各个品种、各类架式的栽培都比较适用。葡萄的双校更新修剪法，就是依栽培目的，按一定距离培育主蔓，在主蔓上配置结果枝组，每个结果核组留1个稍短的预备蔓（一般剪留2－3节）和1个较长的结果母蔓（一般剪留4－7节）（图1）。预备
The double-school update is one of the commonly used pruning methods in grape winter scissors. It is suitable for all varieties and all kinds of shelf cultivation. Grape double-school update pruning method, is to cultivate the purpose, according to a certain distance to cultivate the main vine, in the main vine configuration results Zhizu, each result of the nuclear group to stay a slightly shorter preparation Man (generally cut 2-3 ) And a longer fruiting mother (usually cut 4-7) (Figure 1). preparation