遮荫对麦冬和玉簪叶面积及叶绿素含量的影响

以邢台市区绿地的麦冬、玉簪为研究对象,在全遮荫(20%～30%全光照)、半遮荫(50%～60%全光照)、不遮荫(全光照)3种不同遮荫度下,测定并分析其叶面积的大小、叶绿素a和叶绿素b的含量以及叶绿素a/b的值。研究不同遮荫度对麦冬和玉簪叶面积和叶绿素含量的影响。结果表明:随着遮荫程度的增加,麦冬和玉簪的叶面积增大,叶绿素a和叶绿素b均增加,但叶绿素b的增加率大于叶绿素a,叶绿素a/b的值变小。表明麦冬和玉簪具有强的耐荫性,适合于室内摆设和遮荫处园林配置。

Effect of Shading on Leaf Area and Chlorophyll Contents of Ophiopogonis japonicus and Hosta plantaginea

The effect of different shading levels on leaf area and chlorophyll contents of Ophiopogonisj aponicus and Hosta plantaginea were studied.To urban greening of Ophiopogonis japonicus and Hosta plantaginea as the research object,under three different shading levels with full shade(20%to 30%full sunlight),semi-shade(50%to 60%full sunlight),no shading(full sunlight),the size of leaf area,the content of chlorophyll a and b,and chlorophyll a / b value were measured and analyzed.The results showed that the degree of shading increases,leaf area enlarges,the content of chlorophyll a and b increased,but the increase rate of chlorophyll b were larger than chlorophyll a,chlorophyll a / b value decreased.Ophiopogonis japonicus and Hosta plantaginea were strongly able to endure shade,suitable for indoor furnishings and a large crown density garden configuration.