| 荔枝树体N素分布及累积特点 |
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| 引用本文： | 陈菁,樊小林,孙光明.荔枝树体N素分布及累积特点[J].果树学报,2009,26(2). |
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| 作者姓名： | 陈菁 樊小林 孙光明 |
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| 作者单位： | 陈菁,CHEN Jing(华南农业大学肥料与平衡施肥研究室,广州,510642;中国热带农业科学院南亚热带作物研究所,广东湛江,524091);樊小林,FAN Xiao-lin(华南农业大学肥料与平衡施肥研究室,广州,510642);孙光明,SUN Guang-ming(中国热带农业科学院南亚热带作物研究所,广东湛江,524091)
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金资助项目(中国热带农业科学院南亚热带作物研究所)，国家支撑计划 |
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| 摘 要： | 采用整株枝解法,在采果后把9a生成年妃子笑和黑叶、3a生幼年妃子笑荔枝的根、木质部、皮部、叶、复叶柄5个器官分成14～16个部位,测定各个部位各个器官的N含量。结果表明,1)N在不同器官和不同部位含量是不同的。N含量在叶片最高,在根颈、主茎木质部、主根含量较低;在同级枝根中,皮部N含量显著高于木质部;荔枝枝干和根系,随着其粗度增加,其N含量基本上呈下降趋势,但成年树下降幅度比幼年树的大。2)成龄妃子笑与黑叶各部位各器官N含量没有显著差异,但成年树叶、复叶柄、末级侧枝皮部、木质部N含量高于幼年树相应部位相应器官N含量。3)荔枝N素累积在叶片最多,其次为枝干,根系N累积量较少,末级侧枝N素累积量占整株树N素累积量50%以上。
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| 关 键 词： | 荔枝 N素分布 N累积 |
Distribution and accumulation of N in litchi trees |
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| CHEN Jing,FAN Xiao-lin,SUN Guang-ming.Distribution and accumulation of N in litchi trees[J].Journal of Fruit Science,2009,26(2). |
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| Authors: | CHEN Jing FAN Xiao-lin SUN Guang-ming |
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| Institution: | South China Agricultural University;Guangzhou;Guangdong 510642 China;2South Subtropical Crops Research Institute;CATAS;Zhangjiang;Guangdong 524091 China |
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| Abstract: | Nine and three-year-old trees of Feizixiao(Litchi chinensis Sonn cv.Feizixiao) and 9-year-old tree of Heiye litchi cultivars were uprooted and divided into 14 to 15 parts belonging to 5 organs(root,xylem,cortex,leaf,leaf stalk) after har-vest.The N concentration in different parts and organs was examined.The results showed that there was significant difference in the N concentration in different parts and organs.The N concentration in leaves was the highest,and the lowest was in the root crown,stem xylem an... |
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| Keywords: | Litchi N distribution N accumulation |
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