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树木修剪后,伤口愈合不好或不能愈合,主要原因是伤口周围的皮层细胞,形成层细胞和木质部细胞逐渐死亡,形成层细胞不能形成“愈合组织”。要使修剪后的伤口很快愈合,在修剪时要注意以下几个方面:一、锯多年生枝时,要注意不留残桩,使锯口表面与所留侧主枝的主轴平行,而且要把锯口用刀削平。修剪一般枝条时,剪刀要锋利,剪口的斜面要小,以不伤皮为原则。二、修剪弱树宜少去大枝。伤口下留有分枝,也能有利愈合。三、低温易使伤口周围的细胞遭受冻害,修剪最好避免在严冬前进行。另外,土壤缺磷,也会影响伤口愈合。
After the tree pruning, wound healing is poor or can not heal, mainly due to the wound around the cortical cells, forming cells and xylem cells gradually died, the formation of layer cells can not form a “healing tissue.” To make the wound after pruning heal quickly, when pruning should pay attention to the following aspects: First, saw perennial branches, pay attention not to leave stumps, so that the surface of the kerf and main axis of the main branch left parallel, and to Cut the kerf with a knife. Pruning general branches, the scissors to be sharp, notched incline to be small, so as not to hurt the skin principle. Second, pruning weak tree should go less big branches. Wounds left branches, but also conducive to healing. Third, the low temperature easy to make the cells around the wound suffer frost damage, pruning best to avoid before the winter. In addition, phosphorus deficiency in the soil can also affect wound healing.