新疆呼图壁绿洲荒漠草地优势植物体内元素含量和季节变化的研究  

The Research of Element Contents in Different Parts and Seasonal Changes of Domi-nant Plants on Desert Grassland at The Edge of Oasis,

作　　者：孔令韶[1] 马茂华[1] 

机构地区：[1]中国科学院植物研究所

出　　处：《中国草地》1995年第5期23-28,共6页Grassland of China

基　　金：国家自然基金

摘　　要：对新疆呼图壁荒漠草地３５种植物不同部位１６种元素分布规律的研究结果表明，植物不同部位元素含量差异较大。嫩枝叶中具有极高的Ｎａ含量，大多数植物的多数元素含量老枝中最低，多数植物根中Ｆｅ、Ａｌ、Ｍｎ、Ｃｕ、Ｚｎ的含量较高，各部位元素含量差异最大的是Ｎａ，差异最小的是Ｃａ。不同植物种和不同元素含量的季节变化有差异，在多数情况下，６月初的含量高于８月底，６月底～８月初生长旺季元素含量较低。his paper discussed the characteristics of distribution of 16 elements in 35 plant species on desert grassland at the edge of oasis of Hutubi.The results showed that element con-tents are different in various parts of plant,the content of Na in tender twigs of halo-phytic is extremely high,the contents of most elements in old twigs of plants are low-est;the contents of Fe、Al、Mn、Cu and Zn in most plant roots are higher.The variation of Na content in different parts of plants is the most distinct,and Ca is the most indis-tinct.For different plant species and elements,the seasonal changes of element contents are various.In most cases,element contents on early June are higher than those on late August.The element contents at flourishing season from late June to early August are lower.

关 键 词：新疆呼图壁 荒漠 草地 植物元素含量 

分 类 号：S812.3[农业科学—草业科学] Q945.1[农业科学—畜牧学]