【摘要】 为揭示光环境对鱼腥草(Houttuynia cordata)花期和生长的影响机制，发挥其观赏价值，丰富园林植物应用种类，本研究以同一林地不同生长光环境[林缘(LY)、疏林(SL)、密林(ML)]下的鱼腥草为研究对象，利用样方法确定试验样地，观测其花期、生长状况以及光合特性指标，分析不同光环境对鱼腥草开花、生长与光合特性的影响。结果表明：LY下鱼腥草开花数量最多，群体花期持续时间最长；SL次之；ML最差。鱼腥草生长状况和光合特性的各项指标在不同光环境下，除比叶面积和含水量外，均与光强呈正相关，部分差异显著。综上，LY为鱼腥草开花和生长的最佳光环境，挖掘鱼腥草的观赏价值，有利于其在园林景观中的应用，丰富广西药食同源植物在园林应用中的种类。更多还原

【Abstract】 The influencing mechanisms of light environment on the growth and flowering of Houttuynia cordata were studied to give full play to the ornamental value of this plant and enrich the application of garden plants.The quadrat sampling method was employed to determine the sampling sites of H.cordata in the same forest with different light environments including forest edge(LY),sparse forest(SL),and dense forest(ML).The flowering, growth and photosynthetic indicators of H.cordata were measured, and the influences of different light environments on these indicators were studied.The results showed that the flowering number and the population flowering period were the highest in the LY group, moderate in the SL group, and lowest in the ML group.Other growth and photosynthetic indicators except specific leaf area and moisture content of H.cordata were positively correlated with light intensity under different light environments, and some of the correlations were statistically significant.In summary, LY is the best light environment for the flowering and growth of H.cordata.Exploring the ornamental value of H.cordata facilitates the application of this plant in landscape gardening and enriches the plants with both medicinal and edible values for gardening application in Guangxi.更多还原