大紫类型品种修剪有何特点?

2025-04-07 12:25:54
推荐回答(1个)
回答(1):

这一类型的品种,主要包括大紫、小紫和早紫等品种。其成枝力较强,不论短截程度轻重,都能萌发新枝而增加枝量。幼树抽枝较细,角度开张较大,所以,主枝的剪留长度应适当短些,长放以后,易加快短果枝的衰亡,并使结果部位很快外移。对幼龄树的辅养枝,可先行缓放,然后再回缩,回缩后抽生的枝条转旺后,再进行短截。如树冠较小,空间较大时,可以多次缓放,再多次回缩,以促生短枝,增加结果部位。

初果期树的修剪,主要是培养各种类型的结果枝组。培养大、中型结果枝时,可选70~80厘米长的旺枝,缓放1~2年后,再进行回缩;对长度在40厘米左右的较弱枝条,可用于培养小型结果枝组。采用先缓放、后回缩的办法培养结果枝组时,应注意缓放枝条不使过弱,回缩后又不致过旺,保持中庸长势,才能早结果。

大紫类型的甜樱桃,以中、长果枝结果为主,为了保持中、长果枝的适当比例,应根据长果枝的长势与形成果枝的数量,适时进行回缩;但回缩后所保留的发育枝数量不宜过多,以免影响坐果率;但是,如果回缩后抽枝很少,或根本不抽枝,也会影响产量。所以,回缩时一定要根据树势强弱、肥水条件的优劣和枝条的着生位置等,保持回缩后长势不过旺,缓放后长势也不过弱。

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