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栽植的巨峰葡萄易出现上部新梢长势较强,下部新梢长势较弱的问题。对此,我们进行了连续2年的冬剪试验,取得了较好的效果。 1 对下部的枝蔓主要采取短梢修剪和超梢修剪的方法,对有空间的枝蔓可采取中梢修剪的方法,从饱满芽处剪截。但在春季要及时搞好疏穗工作,1个果枝只留1个果穗,以保证新梢有较强的长势。同时疏除过密及过弱的枝蔓,以减少养分的消耗。 2 对上部长势强的枝蔓,遵循以果压冠的原则,主要采用中、长梢修剪的方法,在能保证新梢成熟的基础上,尽可能多留果,以削弱新梢的长势。做法是:
Kyoho grapes planted prone to the growth of the upper part of the new shoots, the lower part of the growing potential of the issue of weakness. In this regard, we conducted a two-year winter shear test, and achieved good results. 1 on the lower part of the main vine to take a short shoot pruning and super-shoot pruning method, there is room for the branches can take the middle of the pruning method, cut from full bud cut. However, sparse spikes in the spring to do a good job in a timely manner, leaving only 1 fruit branch of a fruit, in order to ensure that the new shoots have a strong growth. At the same time sparse too dense and too weak branches vine, in order to reduce nutrient consumption. 2 on the growth of the upper branch vine, follow the principle of crown pressure, mainly in the long shoot pruning method, to ensure that the mature shoots on the basis of as much as possible to stay fruit, to weaken the growth of shoots. Practice is: