干旱处理对不同品种簕杜鹃光合特性的影响  

Effect of Drought Stress on Photosynthesis Characteristics of Different Varieties of Bougainvillea spectabilis

作　　者：王春春 谢利娟 韩蕾[3] 王定跃 张华 Wang Chunchun;Xie Lijuan;Han Lei;Wang Dingyue;Zhang Hua(School of Applied Chemistry and Biological Technology,Shenzhen Polytechnic＇ Shenzhen Guangdong 518055, China;Techand Ecology ＆ Environment Co.Ltd.＇ Shenzhen Guangdong 518040＇ China;Research Institute of Forestry＇ Chinese Academy of Forestry＇ Beijing 100091, China;Administrative Office＇ W＇utong Mountain National Park＇ Shenzhen Guangdong 518004, China)

机构地区：[1]深圳市职业技术学院应用化学与生物技术学院,广东深圳518055 [2]深圳市铁汉生态环境股份有限公司,广东深圳518040 [3]中国林业科学研究院林业研究所,北京100091 [4]深圳市梧恫山风景区管理处,广东深圳518004

出　　处：《西南林业大学学报（自然科学）》2018年第4期70-75,共6页Journal of Southwest Forestry University：Natural Sciences

基　　金：深圳市城市管理局科技基金项目(szcg201524)资助.

摘　　要：以深圳市立交桥绿化常用的簕杜鹃‘金心双色’、‘绿叶樱花’和‘同安红’3个品种为试验材料,研究簕杜鹃立交桥绿化适宜水分的管理周期,分析干旱处理对簕杜鹃光合特性的影响。结果表明:干旱第3天时‘同安红’净光合效率最高,光合能力较强;干旱第6天虽有所下降,但幅度不大,此后净光合速率和蒸腾速率均显著下降,说明干旱后期‘同安红’光合作用受到影响较大;从各指标变化情况可看出‘同安红’较‘金心双色’、‘绿叶樱花’有较强的抗旱性。建议在立交桥绿化过程中,‘同安红’可适当延长浇水周期。Three varieties of Bougainvillea spectabilis ＇Jinxinshuangse＇, ＇lvyeyinghua＇ and ＇ Tonganhong , commonly used in the greening of Shenzhen overpass were used as testing materials to study the suitable moisture management cycle ＇ and the effects of drought on photosynthetic characteristics were analyzed. The findings indicates that ＇ Tonganhong ＇ had the highest net photosynthetic efficiency and stronger photosynthetic capacity on the 3rd day of drought. the net photosynthetic efficiency decreased but not significantly on the 6th day of drought. After that＇ the net photosynthetic rate and transpiration rate decreased significantly ＇ indicates that the photosynthesis of ＇ Tonganhong＇ was greatly affected in the later stage of drought. ＇ Tonganhong ＇ has stronger drought resistance than that of ＇ Jinxinshuangse ＇ and ＇ lvyeyinghua ＇ based on the index. 1t is suggested that watering period of ＇ Tonganhong ＇ should be extended appropriately in the greening of overpasses.

关 键 词：立交桥 绿化 勒杜鹃 干旱 光合特性 

分 类 号：Q945.78[生物学—植物学]