| 摘要: |
| 本文通过对马大相思幼苗9个无性系的N、P、K、Ca、Mg、S、Fe、Cu、Zn、Mn、B等11种营养元素养分含量进行的测定，得到了各无性系对各养分的需求比例，结果表明各养分需求量间存在极显著差异，其中对N的需求量最大，其次是K，对Cu或B的需求量最小。；器官间的养分需求总量叶>茎>根；不同无性系间各养分需求量亦差异显著，其中最大的AMA306号养分总含量是最小的AMA305的1.54倍。根据分析，得到了各无性系对各养分的需求比例。 |
| 关键词: 马大相思 无性系 营养元素 需求量 |
| DOI： |
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| 基金项目:*国家“十一五”林业科技支撑计划“高产优质相思速生材新品种选育（2006BAD01A1505）”国家“十一五”林业科技支撑计划“桉树和相思速生丰产林培育关键技术研究与示范”（2006BAD24B0202）；广东林业科技创新专项“优质、速生相思无性系选育研究与示范”（2009KJCX006）。； |
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| The nutrient needs of A. mangium×A. auriculiformis seedlings |
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Zhao Ya-Lin
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| Abstract: |
| Abstract：From the measurement of 11 kinds of nutrition elements in A. mangium×A. auriculiformis seedlings，the elements required proportion of clones could be found. And there were extremly significant differences between each nutrition. Among the nutritions，N had the hihgest requirement，K needed less than N，and Cu or B was the least needed. Leaives had the highest total nutrition requirements，later was stem and root was the last. There were also significant differences between each nutrition requirements in different clones，among which the highest was NO. AMA306 was 1.54 times higher than NO. AMA305. |
| Key words: Acacia mangium×A. auriculiformis Cunn．ex Bench clones nutrition elements nutrition requirement |
