10种野生地被植物耐荫性初步研究

目的]选择10种常见野生地被植物,分别进行5种不同程度遮荫处理,并对其进行形态与生理指标测量研究。方法]设全光照(CK)、遮荫率55%(A)、遮荫率65%(B)、遮荫率75%(C)和遮荫率85%(D)共5个处理,以城市园林绿化常见的耐荫能力强的红花酢酱草作为对照植物。结果]在不同程度遮荫处理下,多数植物表现出较强的耐荫性,但部分植物在强度遮荫下生长受到抑制;随着遮荫程度的增加,不同植物的不同指标变化情况各异。结论]活血丹、红纹过路黄表现出最强的耐荫性,而梓木草、三叶萎陵菜耐荫性相对较弱。

Preliminary Study of Shade Tolerance of 10 Ground Plant Species

Objective] 10 ground cover plant species were sited under 5 different light intensities,and the morphological and physiological indexes were measured.Method] Full illumination(CK),shade rate of 55%(A),shade rate of 65%(B),shade rate of 75%(C) and shade rate of 85%(D) were set.Safflower shamrock(Oxalis corniculata) which is common in urban landscape was used as the control plant as it has strong shade-tolerant ability.Result] Most species showed strong shade tolerance under different shading treatments.But some species’ growth was inhibited under intensive shading treatments.With shade density increasing,different indexes of different species changed diversely.Conclusion] Lysimachia christinae and Glechoma longituba showed the most strongest shade tolerance.Potentilla freyniana and Lithospermum zollingeri showed less strongest shade tolerance.Different species should be selected according to the actual situations in practical applications.