摘要
在生长季节,红三叶和鸭茅化学元素生物吸收系数的动态模型通常为二次多项式(y=cx2+bx+a),只有鸭茅的Ca和Mn呈对数函数(y=blnx+a)。2种牧草的N、P和Ca为富集元素,其余K、Mg、Fe、Mn、Cu、Zn、Mo、Na、Co、V、Sr、Ni、Pb、Al、Ti、Li等16种化学元素均为贫集元素。
The general dynamic models of biological absorbing coefficient of chemical elements for Trifolium pratense and Dactylis glomerata were simulated during the growing season, using the quadratic polynomial （y =cx^2＋bx＋a）, while a glomerata. The N, P and log Ca arithm function （y = bln x ＋a） was used specifically for Ca and Mn with D. were enriched elements while 16 elements were impoverished in the two forages, K, Mg, Fe, Mn, Cu, Zn, Mo, Na, Co, V, Sr, Ni, Pb, Al, Ti and Li belonged to impoverished elements in the two forages.
出处
《草业学报》
CSCD
2008年第2期47-53,共7页
Acta Prataculturae Sinica
基金
国家"十五"科技攻关课题"草地植被恢复重建关键技术研究与示范"(2004BA528B01)
中国科学院地理科学与资源研究所知识创新工程所长基金项目"红池坝草地生态系统研究"(SJI0G-C05-01)资助
关键词
红三叶
鸭茅
化学元素
生物吸收系数
动态
Trifolium pratense
Dactylis glomerata
chemical element
biological absorbing coefficient
dy namic
