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环境的外部因素是指季节的温度、空气的湿度以及扦插的基质透水透气的性能。假若气温过高或过低,空气干燥,插穗尚未生根时便扦插,工作只是徒劳。基质透水透气性差则不利于插穗的成活,好在有利于插穗的发根生长,因此透气透水还是需要注意和把握的。从插穗的内在因素来看必须去选择那些健壮的、无病虫害的枝条。如果插穗选取的是老弱僵枝、
Environmental external factors refer to the temperature of the seasons, the humidity of the air and the permeability of the cuttings to the substrate. If the temperature is too high or too low, the air is dry, cuttings have not yet been cut when rooting, the work is only futile. Poor permeability of the water permeability of the matrix is not conducive to the survival of cuttings, but fortunately cuttings root growth, so breathable water or need attention and grasp. From the cuttings of the internal factors must go to choose those robust, pest-free branches. If the cuttings are old and weak,