北京屋顶绿化佛甲草及几种景天属植物养护管理技术的研究.doc

北京屋顶绿化佛甲草及几种景天属植物养护管理技术的研究 马燕1 白淑媛1 梁芳1 彭博2 （1.北京市园林科学研究所，北京 100102；2.北京市西城区园林局，北京 100045） 【摘要】：实验以确定简单式屋顶绿地佛甲草及几种景天属（Sedum Tourn. ex L ）植物的养护标准为目的，测定其年需水量、灌溉时间，调查生长和病虫害发生状况，确定修剪时间及杂草防除方法。试验结果表明：屋顶绿化基质含水率和佛甲草茎叶含水率无相关性；基质层6cm，株高8cm～12cm，年最适供水量为361.45mm；基质层10cm，株高25cm～30cm，年供水量为533.90mm。几种景天属主要发生的是生理病害，常由于积水、过度干旱和夏季高温高湿等气候因素造成。主要虫害为蚜虫和蜗牛，但未发现严重危害的现象。秋季适时适度修剪可延长佛甲草的绿色期，并提前返青，其最佳修剪量为株高的1/3～1/2，杂交景天和白花景天夏季可刺激二次开花。防除杂草是景天属养护的十分重要的措施之一。北京地区人工灌溉也是景天属植物必须的养护管理措施，如：返青水、干热季节灌溉和冬灌。 【关键词】：屋顶绿化 佛甲草 养护管理 技术 Study on the Manage Conservation Technology of the Sedum lineare and Several Sedum at the Roof Greening of Beijing MA Yan1 BAI Shu-Yuan1 LIANG Fang 1 PENG Bo2 (1.Beijing Instituted of Landscape and Gardening, Beijing 100102,China; 2.Garden Bureau West District Beijing ,Beijing 100045, China) Abstract: The experiment to determine the simple style roofs green sedum lineare and several Sedum (Sedum Tourn. Ex L) for the purpose of conservation standards were measured annual water demand, irrigation time, the investigation status of growth and pests and diseases to determine the pruning time and method of weed control. The results showed that: Rooftop greening substrate moisture content and moisture content of stems and leaves of Sedum no correlation; stroma 6cm, height 8cm ~ 12cm, the optimal water supply for years, 361.45mm; substrate layer of 10cm, height 25cm ~ 30cm, The annual supply capacity of 533.90mm. Several Sedum mainly the physiological disease, often due to water, excessive humidity such as drought and high summer temperatures caused by climatic factors. Main pests of aphids and snails, but did not find the phenomenon of serious harm. Appropriate and timely pruning in autumn sedum green extended period and early turn green, the optimum amount of pruning height of 1 / 3 ~ 1 / 2, hybrid Sedum Sedum white flowers in summer, and may stimulate the secondary flowering. Sedum Control in Weed is a very important conservation measures. Beijing area irriga