The POD activity have a strikingly negative relationship with the height of tree, trunk girth, diameter of crown, the volume of the tree crown, and the dwarfed nature of the stocks.
POD活性与树高、干周、冠径、树冠体积呈显著负相关，与砧木的矮化性呈负相关。
Additionally, investigations on shelterbelt trees were carried out, and stem-analysis techniques were used, to develop a method for determining the mature height of tree windbreaks (H0).
另外，通过对林带树木的野外调查，应用树木解析技术确定林带成林高(H 0)。
Additionally, investigations on shelterbelt trees were carried out, and stem-analysis techniques were used, to develop a method for determining the mature height of tree windbreaks (H0).
另外，通过对林带树木的野外调查，应用树木解析技术确定林带成林高(H 0)。
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