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纺锤形是近几年大樱桃生产中采用的一种新树形,该树形特点是中干直立粗壮,主枝单轴延伸,结果枝组直接着生在主枝上,以短果枝和花束状结果枝为主。树冠紧凑,通风透光好,适用于密植园,有利于丰产。现将该树形整形技术要点介绍如下。 1.大樱桃苗木选择 应选择2年生不带分枝,根系发达,无病虫害的苗木。 2.定干 苗木定干高度一般掌握在60～80cm处,剪口封严。 3.修剪技术 定干后,应在苗木50cm以上,选择不同方向选留主枝,主枝间距15～20cm,同一方向主枝间隔40～50cm,主枝向四周分布,主枝角度达到80～90度。主枝培养的方法是:定干后,在50～70cm之间,选择不同方向的芽进行刻伤,使其萌发抽枝。在第1年冬季修剪时,对抽生的生长旺、粗壮、基角小的枝条,在基部选择2～3个芽实施重短截,剪口
Spindle is a new tree used in the production of cherry in recent years, the tree shape is characterized by vertical stout stem, main branch uniaxial extension, the results Zhizu group was born directly on the main branch, with short fruit branches and flowers The main results of the branches. Crown compact, good ventilation, suitable for close planting garden, is conducive to high yield. Now the tree shape technology points are as follows. 1. Selection of large cherry seedlings should choose 2-year-old without a branch, developed root system, no pests and diseases of seedlings. 2. Set dry stem height is generally controlled at 60 ~ 80cm, notched seal. 3. Pruning technology set dry, should be more than 50cm in seedlings, choose different directions to choose the main branch, the main branch spacing 15 ~ 20cm, the same direction the main branch interval 40 ~ 50cm, the main branch to the surrounding distribution, the main branch angle of 80 ~ 90 degrees. The main branch of the culture method is: dry set, between 50 ~ 70cm, choose different directions of the buds were engraved, so that its germination shoots. In the first year of winter pruning, growing on the prosperous, stout, small base angle of the branches, the choice of 2-3 buds at the base of the implementation of short cut, cut