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当前位置: 首页 > 文章 > 供氮水平对爬山虎幼苗生长形态和氮分配的影响 应用生态学报 2007,18 (10) 2214-2218
Position: Home > Articles > Effects of nitrogen supply on Parthenocissus tricuspidata seedling morphology and nitrogen allocation Chinese Journal of Applied Ecology 2007,18 (10) 2214-2218

供氮水平对爬山虎幼苗生长形态和氮分配的影响

作  者：
王忠强;吴良欢;许波峰;邵雪玲
单  位：
浙江大学环境资源学院环境修复与生态健康教育部重点实验室;宁波市江北区农林水利局林特工作总站
关键词：
爬山虎;氮素营养;生长形态;氮分配
摘  要：
通过水培试验,研究了不同氮素水平(0、0.15、0.3、0.45、0.6和0.75g.L-1)条件下爬山虎幼苗的生长形态和体内氮分配状况.结果表明:低氮处理的爬山虎侧枝发育较小,而较高氮处理的侧枝着生位置低,且长度显著高于低氮处理;供氮水平的提高能促进植株的生物量及茎、叶、根氮含量和氮累积量的增加,其中叶生物量占全株生物量的比例最高,在50%以上;叶的氮累积量占整个植株总氮量的60%～70%.
译  名：
Effects of nitrogen supply on Parthenocissus tricuspidata seedling morphology and nitrogen allocation
作  者：
WANG Zhong-qiang1,2,WU Liang-huan1,XU Bo-feng3,SHAO Xue-ling1(1Key Laboratogy of Environmental Remediation and Ecosystem Health of Education Ministry,College of Environmental and Resource Science,Zhejiang University,Hangzhou 310029,China;2College of Urban and Environmental Science,Northeast Normal University,Changchun 130024,China;3Forest Management Station of Jiangbei District,Ningbo 315020,Zhejiang,China)
关键词：
Parthenocissus tricuspidata;nitrogen nutrition;morphology;nitrogen allocation
摘  要：
With hydroponic culture,this paper studied the effects of different nitrogen(N)supply levels(0,0.15,0.3,0.45,0.6,0.75 g N·L-1)on the seedling morphology and N allocation of Parthenocissus tricuspidata.The results showed that lower N supply retarded the development of P.tricuspidata seedling's branch;while higher N supply had significant effects in promoting the seedling's early branching and lowering the branching position on the main stem.Supplying higher amount of N increased the plant biomass and the N concentration in root,leaf and stem significantly.Compared with stem and root,leaf had the highest biomass,accounting for 50% of the total biomass,and the highest N accumulation,accounting for 60%-70% of the total accumulated N.

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