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径切扦插系指插穗于插前在其基部横断面沿直径部位,用小刀向上纵切一刀或按十字形向上纵切两刀(纵切刀数和深度视插穗粗度和长度而定)的切割方法。于1983～1987年我们对林木、木本花卉等30余种植物材料,分别用径切和平切插穗所进行的扦插对比试验的结果是:径切较平切的插穗愈合早、生根早、发根多和生根率高。为了解释这个规律性的效果,我们对径切扦插生理机制也进行了一些研究。
Cut cuttings Cuttings cuttings in the base before the insertion cross-section along the diameter of the site, with a knife up a longitudinal knife or cross-shaped longitudinal slitting up two knives (longitudinal knife number and depth depending on the thickness and length of the cuttings, depending on) Cutting method. From 1983 to 1987, we compared the cuttings of 30 species of plant materials, such as tree wood and woody flower, with diameter cut and cut cuttings, respectively. The results of cuttage comparison tests were as follows: cuttings with relatively flat diameter cut earlier, rooted early, Roots and rooting rate is high. In order to explain the effect of this regularity, we also conducted some researches on the physiological mechanism of cuttings.