Wei Sheng-li, Wang Wen-quan, Chen Xiu-hua, Qin Shu-ying, Chen Xiu-tian
Forestry Resources and Environments College, Northeast Forestry University, Harbin 150040, China.
Zhongguo Zhong Yao Za Zhi. 2005 Jan;30(2):100-4.
To study the shade-endurance property of Glycyrrhiza uralensis and provide rationale for the practice of inter-cropping G. uralensis with trees.
Black shading nets were used to provide five different environments of light intensities (light penetration rates of 100%, 75%, 65%, 50% and 25%, respectively). To assess the shade-endurance capacity of G. uralensis, several aspects were evaluated, including growth characters, physiological and ecological characters, biomass, and chemical contents.
G. uralensis is a light-favored plant. The growth indices such as plant height, stem diameter, leaves number, root diameter, biomass, and daily average photosynthetic rate (Pn) are highest when light permeation rate is 100%. All these indices decrease when light intensity decreases. However, G. uralensis possesses shade-endurance capacity to some degree; it adapts to the shading environment by increasing the leaf area and chlorophyll contents. Shading has no obvious effect on the absolute light energy utilization rate (Eu) or Fv/Fm ratio. The influence of shading on the chemical contents of G. uralensis is obvious.
研究乌拉尔甘草的耐荫性，为乌拉尔甘草与树木间作实践提供理论依据。
使用黑色遮阳网营造五种不同光照强度环境（透光率分别为100%、75%、65%、50%和25%）。为评估乌拉尔甘草的耐荫能力，从生长特性、生理生态特性、生物量和化学成分等几个方面进行了评价。
乌拉尔甘草是喜光植物。透光率为100%时，株高、茎直径、叶片数、根直径、生物量和日均光合速率（Pn）等生长指标最高。当光照强度降低时，所有这些指标都会下降。然而，乌拉尔甘草在一定程度上具有耐荫能力；它通过增加叶面积和叶绿素含量来适应遮荫环境。遮荫对绝对光能利用率（Eu）或Fv/Fm比值没有明显影响。遮荫对乌拉尔甘草化学成分的影响是明显的。
