头花蓼在屋顶绿化中的生长及观赏特点研究
On Cultivation and Ornamental Value of Poly gonum Capitatum under Roof Greening
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摘要: 以头花蓼为对象，通过屋顶种植槽，设置实生苗幼苗期3种不同水分及成苗期6种不同水肥处理，对比分析其适应性，探讨景观价值。结果表明：幼苗期，头花蓼在900 m L的浇水量下，生长最佳，经历30 d ，叶片大小稳定；成苗期，头花蓼在浇水1600 m L施氮肥处理下，生长最佳；头花蓼植株80 d成坪，种群平均盖度为91％，花期持续时间为240 d ，可作为屋顶绿化地被材料。Abstract: Under roof greening ,diversity and landscape of cover plant are very important .Focusing on n-ative groundcover plant--- Polygonum capitatum as an experimental plant ,by using planting container , set up 3 different methods of irrigations at the seedling stage and 6 different method of irrigations with 2 fertilizer treatments in nitrogen at the mature stage ,in order to analysis of its adaptability and landscape value .The results show that ,during the seedling stage ,growth is best under 900 ml irrigation and foliage is stable after 30 days ;during the mature stage ,the grow th is best under the treatment at 1600 ml irriga-tion with fertilization .It was necessary of 80 days to cover the land at 91% .Also ,it can flower for 240 days .So ,this material could be used in the roof landscape .
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