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用曾在针叶树材上用过的针刺法对白杨和刺槐进行了针刺,以确定该法在阔叶树种木材中测定木部质生长量的可靠性。通过针刺(用直径为400微米的金属缝纫针和250微米的特制针通过韧皮部刺入树干),初生间隔层内未成熟的木质部细胞,在针刺形成的裂口周围产生不规则的扩大和增生,而使裂口逐渐封闭起来。与此同时,裂口两侧被压碎和压紧的未成熟细胞隔层上残留的条纹,因形成层的分离而被破坏。条纹破裂的末端可使该条纹与形成层原
Poplar and acacia were acupunctured by acupuncture once used on conifer trees to determine the reliability of the method for measuring the growth of woody matter in hardwood species. The immature xylem cells in the primary compartment create irregular enlargement and hyperplasia around the needling-formed rips by acupuncture (piercing the trunk through the phloem with a metal sewing needle of 400 microns in diameter and a special needle of 250 microns) , Leaving the gap gradually closed up. At the same time, the streaks remaining on the immature cell compartment crushed and crushed on both sides of the tear were destroyed by the separation of the cambium. Striped ruptured ends allow the streaks to form stratum