| 马占相思等5个树种叶中养分含量和养分利用效率的研究 |
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| 引用本文： | 许松葵,薛立,杨鹏,陈伟.马占相思等5个树种叶中养分含量和养分利用效率的研究[J].广东林业科技,2003,19(2):13-16. |
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| 作者姓名： | 许松葵 薛立 杨鹏 陈伟 |
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| 作者单位： | 1. 广东省林业局,广州,510173
2. 华南农业大学林学院 |
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| 摘 要： | 测定了阔叶树马占相思、木荷和红锥及针叶树杉木和加勒比松叶中的养分含量。结果表明 :5个树种中马占相思叶的N、P、K含量最高 ,杉木叶的Ca、Mg含量最高 ,而加勒比松叶的 5种养分含量最低。马占相思、红锥和加勒比松叶的养分含量为N >K >Ca >P >Mg ,而木荷和杉木叶的养分含量为N >K >Ca >Mg >P。各树种养分利用效率为P或Mg >Ca >K >N。
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| 关 键 词： | 马占相思 树叶 养分含量 养分利用效率 木荷 红锥 杉木 加勒比松 阔叶树 针叶树 |
RESEARCHES ON THE NUTRIENT CONCENTRATIONS IN LEAVES AND NUTRIENT USE EFFICIENCY OF 5 TREE SPECIES |
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| Xu Songkui,Xue Li,Yang Peng,Chen Wei.RESEARCHES ON THE NUTRIENT CONCENTRATIONS IN LEAVES AND NUTRIENT USE EFFICIENCY OF 5 TREE SPECIES[J].Forestry Science and Technology of Guangdong Province,2003,19(2):13-16. |
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| Authors: | Xu Songkui Xue Li Yang Peng Chen Wei |
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| Abstract: | Nutrient concentrations were studied in leaves of broadleaved Acacia mangium, Schima superba and Castanopsis hystrix tree species and in coniferous Cunninghamia lanceolata and Pinus caribaea tree species. Leaf N, P and K concentrations in Acacia mangium were the highest, whereas the highest leaf Ca and Mg were found in Cunninghamia lanceolata for all species. The lowest concentrations for all nutrients existed in Pinus caribaea leaves. The order of nutrient concentrations was N>K>Ca>P>Mg for Acacia mangium, Castanopsis hystrix and Pinus caribaea , and was N>K>Ca>Mg>P for Schima superba and Cunninghamia lanceolata . The order of nutrient use efficiency was P or Mg>Ca>K>N for all tree species. |
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| Keywords: | broadleaved tree coniferous tree nutrient concentrations of leaves nutrient use efficiency |
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