富士苹果结果部位外移的原因

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一、主枝级次多,外围枝量大 整形修剪时,主枝两侧分枝过大过多,主枝前部枝量太多,造成内膛大枝拥挤,小枝无空间,外围生长点增强,前面拉力大,后面缺营养,赶前现象严重,花芽只好在外围形成。 二、拉枝跟不上,角度不开张 幼树期拉枝跟不上,很多不足80度,主枝生长过旺,结果后也没及时开角,光照恶化,内膛难以成花。 三、层间没有拉开,叶幕不成层 生产上常见的小冠疏层形,要求层间距80~100cm,可是,有很多 First, the main branch of the level of more than the large amount of external branch pruning, the main branches on both sides of the branches too much too much, before the main branches of the branches too much, resulting in large crowded bore, branchlets without space, peripheral growth point enhanced In front of large pulling power behind the lack of nutrition, the serious phenomenon of catching up, flower buds had to form in the periphery. Second, pull the branch can not keep up, the point of view is not open Young branch of the branch can not keep up, many less than 80 degrees, the main branch over-growth, the result did not open the corner in time, light deterioration, difficult to spend the inner bore. Third, there is no pull between the layers, the leaf curtain stratification of the production of common small sparse layer, requiring layer spacing 80 ~ 100cm, however, there are many
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