余甘子结果母枝和结果枝生长发育特性研究
Growth Characteristics of Bearing Base Branch and Fruit Branch of Phyllanthus emblica
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摘要: 2002年在福建惠安,通过调查余甘子的兰丰、粉甘、六月白、秋白、扁甘、山甘6个品种树体结构组成,结果母枝和结果枝的生长发育特性及其相互关系,结果表明:10年生时余甘子结果枝主要集中分布在14年生结果母枝上;在垂直方向上,有效结果母枝主要集中在树冠上部和中部距地面100~200 cm处,层内有效结果母枝数占81.9%;在水平方向上,距主干0~150 cm处是有效结果母枝集中分布区,其有效结果母枝数占88.8%;从15年生单位母枝长(cm)的结果枝数来看,最多的是扁甘,平均达1.884个。研究认为,余甘子在30 a之前结果母枝分布比较合理;按合理的树体结构,余甘子造林时的初值密度750~900株.hm-2比较合理。Abstract: The tree structure of Lanfeng,Fen'gan,Liuyuebai,Qiubai,Bian'gan,Shan'gan and the relationship between its indeterminate shoots and branchlets that growth development traits of Phyllanthus emblic L.were surveyed and analyzed.The results showed that branchlets were location 1 to 4 years' indeterminate shoots on 10 years tree.On vertical sense of tree structure,81.9% availability indeterminate shoots were set upper and middle of canopy where distance 100~200 cm from earth surface.On horizontal direction of tree structure,88.8% availability indeterminate shoots were set 0~150 cm from trunk of tree.The most branchlets of per centimeter of indeterminate shoots was 1.884 of bian'gan variety.The branchlets distributing is reasonable on 1 to 30 years'tree.From the structure traits of Phyllanthus emblic L.750~900 individual plants per hectare will be rather rational density for a long consideration.