【摘要】 2016年在福建省洋口国有林场来舟管护站堆头苗圃，以圆齿野鸦椿当年生半木质化枝条为插穗，研究扦插基质与植物生长调节剂种类、浓度、浸泡时间对圆齿野鸦椿扦插生根质量的影响。结果表明：扦插基质是影响扦插生根率、≥5 cm的Ⅰ级侧根数、最长Ⅰ级侧根根长的最主要因素；植物生长调节剂种类与浓度对扦插生根率、最长Ⅰ级侧根根粗影响显著；植物生长调节剂浸泡时间主要影响扦插生根率。依据生根质量指数筛选出2个适宜圆齿野鸦椿扦插生根基质与植物生长调节剂组合方案：以黄心土∶素沙（2∶1）为基质，ABT 50 mg·L^-1溶液浸泡插穗180 min;以黄心土为基质，NAA 50 mg·L^-1溶液浸泡插穗360 min。生根率、≥5 cmⅠ级侧根数、最长Ⅰ级侧根长、最长Ⅰ级侧根根粗分别在65.5%、3.73条、4.36 cm、1.48 mm以上。更多还原

【Abstract】 In 2016,at the Duitou Nursery of Laizhou Management and Protection Station of Fujian Provincial Yangkou National Forest Farm, using the cuttings of Euscaphis konishii Hayata to study the effects of cutting substrate, exogenous hormone types, concentration and soaking time on the rooting quality value.The results showed that cutting substrate is the most important factor affecting the rooting rate of cuttings, the number of lateral roots ≥5 cm, and the longest root length of lateral roots; hormone types and concentrations have significant effects on the rooting rate of cuttings and the root thickness of the longest first-degree lateral roots; hormone soaking time only affects the rooting rate of cuttings.Two suitable combinations of rooting matrix and exogenous hormone were selected according to the rooting quality index of Euscaphis konishii Hayata(soak cuttings in ABT 50 mg·L^-1 solution for 180 min and cut cuttings on yellow heart soil: plain sand as 2∶1;NAA 50 mg·L^-1 soak cuttings on yellow heart soil for 360 min),the rooting rate, the number of lateral roots ≥5 cm, the length of the longest lateral roots and the thickness of the longest lateral roots are above 65.5%,3.73,4.36 cm and 1.48 mm.更多还原