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《Chinese Agricultural Science Bulletin》 2007-12
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The Dynamics of Nutrient Contents in Eupatorium adenophorum Spreng Leaf during Reproductive Growth Stages

Zhang Lei1, Wang Wenqi2, Wang Jinjun1, Zhao Zhimo1 (1College of Plant Protection, Southwest University, Chongqing 400716; 2College of Life Science, Jiujiang University, Jiujiang 332000)  
The variation and correlations of seven mineral nutrient elements (N, P, K, Ca, Mg, Al, Mn) of Eupatorium adenophorum Spreng leaf during reproductive growth stages were studied in five growth periods. The results showed that the contents of elements N, Mg and Al decreased during flower bud differentiation stage, while the contents of elements K and Mn increased, and the contents of elements P and Ca are stable; the contents of elements N and K decreased during bud period and florescence period, while the contents of elements Mg, Al and Mn increased, and the contents of elements P and Ca are stable; the contents of elements N, P, Mg and Mn decreased during seed stage, while the content of elements Al increased, and the contents of elements K and Ca are stable; significant correlations existed between Ca and P, while the correlations among the others are insignificant.
【Fund】: 国家重点基础研究发展规划项目“生态系统对紫茎泽兰入侵的抵御机制研究”(2002CB111404);; “十一五”国家科技支撑计划“紫茎泽兰的植被多样性的抵御生态修复技术”(2006BAD08A17)资助。
【CateGory Index】: S451
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