文献类型：期刊文献

中文题名：不同品种和林分油茶树体矿质元素含量差异分析

英文题名：Analysis of Mineral Elements in the Plants of Different Oil-Tea Camellia Cultivars and Stands

作者：严江勤[1,2] 姚小华[1] 曹永庆[1] 任华东[1] 束庆龙[2]

第一作者：严江勤

机构：[1]中国林业科学研究院亚热带林业研究所;[2]安徽农业大学

年份：2015

卷号：37

期号：10

起止页码：51-56

中文期刊名：西南大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：浙江省农业新品种选育重大科技专项项目"油茶高产优质新品种选育及示范"(2012C12908-16);浙江省省院合作林业科技项目"浙江省油茶林地高效复合经营技术研究与示范(2014SY03)

语种：中文

中文关键词：品种;林分;油茶;矿质元素

外文关键词：cultivar; forest stand; Camellia oleifera; mineral element

分类号：S794.4

摘要：为了弄清不同品种和林分油茶树体主要矿质元素的含量差异,研究分析了普通油茶长林系列6个品种以及不同林龄林分油茶树体中主要矿质元素N,P,K,Mn的含量.结果表明:油茶叶片、枝干和根系中N的含量最高,其次是K,P和Mn的含量最低,且不同品种间P和Mn含量的变异系数较高,N和K元素含量的变异系数较低.可见,不同品种对P和Mn元素的吸收和富集能力不同.不同林龄油茶树体N,P,K的含量也表现出较大差异性,其中1年生油茶树体中N,P,K的含量较高,随着林龄增大,各元素的含量表现出不同程度的下降趋势.6年生油茶树体中N,P,K元素的含量较低,而Mn元素含量在各个林龄树体中无明显差异.此外,油茶老林中生长势较好的油茶树体中N,P,K含量较高,而生长势较弱的油茶树体中Mn元素含量较高,可见,N,P,K元素含量是影响油茶老林林分树势的重要因素.
In order to clarify the differences in main mineral element contents in different cultivars and stands of Camellia oleifera,N,P,K and Mn of six varieties of the Changlin series were determined.The content of N was shown to be the highest in leaves,branches and roots of camellia,followed by that of P and K,while Mn content was the lowest.The coefficient of variance between different cultivars was high for P and Mn and low for N and K,thus indicating that the capacity of absorption and enrichment of P and Mn vary with different varieties.The contents of N,P and K differed considerably with camellia tree age：the one-year-old trees contained relatively high N,P and K,which showed a declining trend with increasing tree age,and the six-year-old trees contained relatively low N,P and K.In contrast,little difference was observed in camellia trees of different ages.In addition,in old camellia forests,the vigorous growing trees contained more N,P and K than their poorly growing counterparts.Instead,the poorly growing trees contained more Mn than the well growing trees,suggesting that N,P and K contents are an important factor affecting the growth vigor of Camelliaforest stands.