摘要
以山西省太行山国有林管理局景尚林场人工沙棘园内的中国沙棘优良无性系为材料,通过正交试验,研究了追肥量和树形对不同中国沙棘无性系生长的影响.结果表明,无性系是影响中国沙棘新梢增长率、叶长增长率、叶宽增长率、叶长宽比增长率、果实纵径增长率的最重要因素,是影响果实横径增长率的次要因素;追肥量是影响果实横径增长率的最重要因素,是影响新梢增长率、叶长增长率、叶长宽比增长率、果实纵径增长率的次要因素,对叶宽增长率的影响最小;树形是影响叶宽增长率的次要因素,对其他指标的影响最小.影响新梢增长率、叶长增长率、叶宽增长率、叶长宽比增长率、果实横径增长率、果实纵径增长率的最优组合分别为A1B4C2、A2B4C1、A3B1C2或 A3B2C1、A4B4C2、A3B4C1、A4B4C1.
Abstract
Using excellent Hippophae rhamnoides clones from the artificial seabuckthorn garden of Jingshang Forest Farm of National Forest Administration Bureau of Taihang Mountain in Shanxi Province as materials,the effects of topdressing a-mount and tree shape on the growth of different Hippophae rhamnoides clones were studied through orthogonal experiments.The results showed that clone was the most important factor affecting the growth rate of new shoots,leaf length,leaf width,leaf length to width ratio and fruit longitudinal diameter of Hippophae rhamnoides,and was a secondary factor affecting the growth rate of fruit transverse diameter.The topdressing amount was the most important factor affecting the growth rate of fruit transverse diameter,and was a secondary factor affecting the growth rate of new shoots,leaf length,leaf length to width ratio and fruit longitudinal diameter,with the least impact on the growth rate of leaf width.Tree shape was a seconda-ry factor affecting the growth rate of leaf width,with the least impact on other indicators.The optimal combinations that af-fected the growth rate of new shoots,leaf length,leaf width,leaf length to width ratio,fruit transverse diameter and fruit longitudinal diameter were A1B4C2,A2B4C1,A3B1C2 or A3B2C1,A4B4C2,A3B4C1,A4B4C1.
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