不同遮荫度对鼠尾草生长的影响

Effects of Different Shading Levels on the Growth of Salvia farinacea

研究了不同遮荫水平(0%、50%、70%、90%)对鼠尾草生长的影响。结果表明:遮荫程度的加重,鼠尾草现蕾、开花的日期延后,开花持续的时间缩短。在开花期,随着遮荫度的增加,植株高度、花序长度、花梗长度降低,叶片长度、叶片宽增加,而整个植株、植株的地上部分及根系的鲜重和干重减少。遮荫处理的叶片数与对照处理的没有显著差异。可见,光照充足有利于鼠尾草的生长和花期的延长。

The effects of different shading levels（0%,50%,70%,90%） on the growth of Salvia farinacea were investigated.The results showed that increasing the degree of shade,Salvia farinacea budding,flowering date postponed and the duration of flowering shortened.In the flowering period,with the degree of shading increased,the plant height,inflorescence length,pedicel length reduced,leaf length,leaf width increased,and the whole plant,aerial parts of plants and root fresh weight and dry weight reduced.It is no significant differences of the number of leaves between the shading treatment and the control.No shading was conducive to the extension of the growth and flowering of Salvia farinacea.