摘要
通过对典型草原20个植物种群结实期的C、N、P、K、Ca、Mg6种元素在植物体不同部位配置的研究,初步认为C、K、Mg在不同种群的生殖分配规律基本一致,在生殖器官中所占比例约为25%~30%;N、P在生殖器官中所占比例较大,约为30%~40%;Ca在生殖器官中的比例较低,仅占20%左右,而单子叶植物种群中的根部含量多,占50%左右,双子叶植物种群中的叶中含量多,占40%左右.另外,有几种植物较为特殊,狼毒、鹤虱的果实中P的含量较低,不到20%;狼毒、达乌里芯芭的果实中Ca的含量低,大约10%;狼毒、酸膜叶蓼的果实中Mg的含量低,大约10%.
The reproductive allocation of C,N,P,K,Ca,Mg in different plant parts and different plant populations was studied.The results show that the reproductive allocation of C,K,Mg is identical,the contents of reproductive organ are about 25% ̄30%.The contents of N,P are highest in reproductive organ,and they are 30% ̄40%.The contents of Ca are low in reproductive organ.They are about 20%.But they are highest in root of monocotyledon (about 50%) and leaf of dicotyledon (about 40%).Moreover some populations are special.They are Stellea chamaejasme,Lappula echinata,Cymbaria dahurica,Polygonum lapathifolium.
出处
《内蒙古大学学报(自然科学版)》
CAS
CSCD
1997年第4期568-571,共4页
Journal of Inner Mongolia University:Natural Science Edition
基金
国家自然科学基金