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桉树属异花授粉植物,极易杂交,但过去都是采取种子有性繁殖,造林后往往产生不同程度的分化,生长量不高。为了克服上述缺点,采用无性繁殖扦插的方法,保持优树的优良性状,发挥其速生性和抗性等优点,提高单位面积产量,达到快出材,出好材的目的。桉树系扦插生根困难的树种,为了探讨外界和内部因素对桉树扦插生根的影响,从一九七九年至一九八一年进行不同树种、不同插条处理(分别选择不同枝条部位、留叶面积、化学药剂处理),不同插床基质、不同插床环境等项试验。一九七九年六月十三日扦插的“雷林一号”桉(优树50号)。扦插苗,于一九七九年八月六至七日定植115株,造林后一年平均树高3.5
Eucalyptus is a cross-pollinated plants, extremely easy to cross, but in the past are to take sexual reproduction of seed, afforestation often produce different degrees of differentiation, growth is not high. In order to overcome the above shortcomings, the method of asexual propagating cuttage is adopted to maintain the excellent traits of the superior tree, give play to its advantages of fast-growing and resistance, increase the output per unit area, and achieve the purpose of quicking out raw materials and producing good materials. Eucalyptus cuttings rooting difficult species, in order to explore the external and internal factors on the eucalyptus cutting rooting, from 1979 to 1981 for different tree species, different cuttings (respectively, select different branches of the site, leaves Area, chemical treatment), different capping matrix, different environment, such as plug bed test. June 13, 1979 cuttings of the “Leilin I” Eucalyptus (Yushu 50). Cuttings, 115 plants were planted from August 6 to August 7, 1979, with an average tree height of 3.5 a year after afforestation