中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 干旱区绿洲灌溉条件下不同树龄轮台白杏根系的空间分布 应用生态学报 2012,23 (9) 2353-2360
Position: Home > Articles > Root system spatial distribution of different aged Armeniaca vulgaris cv.Luntaibaixing in arid oasis under irrigation Chinese Journal of Applied Ecology 2012,23 (9) 2353-2360

干旱区绿洲灌溉条件下不同树龄轮台白杏根系的空间分布

作  者：
王世伟;潘存德
单  位：
新疆农业大学林学与园艺学院
关键词：
绿洲;轮台白杏;根系干质量密度;根长密度;根表面积密度;树龄;空间分布
摘  要：
采用田间分层挖掘法和图像扫描分析法,研究了干旱区绿洲灌溉条件下不同树龄轮台白杏根系的空间分布特征.结果表明:轮台白杏的根系主要由细根(d≤1mm)构成,中粗根(12mm)所占比例较小,树龄5a、10a和15a轮台白杏细根长度分别占根系总长度的90.9%、88.4%和79.9%.随树龄延长,根长密度增加,不同径级根长密度均为15a>10 a>5a.在垂直方向上,轮台白杏的根长密度呈现出先增加后减小的分布趋势,且各土层根系干质量密度差异显著,树龄5a、10a和15a轮台白杏根系干质量密度分布较集中的区域分别为距离树干200cm以内的30～80cm、30～100cm和30～100cm深度土层.轮台白杏根系的水平分布特征为距离树干越远根系干质量密度越小,且距树干不同距离处的差异显著.从减小相邻树行间树体根系的交错重叠和降低水肥竞争的角度考虑,在干旱区绿洲灌溉条件下,轮台白杏的栽植行距应≥6m.
译  名：
Root system spatial distribution of different aged Armeniaca vulgaris cv.Luntaibaixing in arid oasis under irrigation
作  者：
WANG Shi-wei,PAN Cun-de(College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi 830052,China).
关键词：
oasis;Armeniaca vulgaris cv.Luntaibaixing;root dry mass density;root length density;root surface density;tree age;spatial distribution.
摘  要：
By the methods of layered digging and image scanning analysis,this paper studied the root system spatial distribution of different aged Armeniaca vulgaris cv.Luntaibaixing in arid oasis under irrigation.The root system of A.vulgaris cv.Luntaibaixing was mainly constituted by fine roots(d≤1 mm),while medium roots(12 mm) only had a small proportion.For the trees aged 5-year old,10-year old,and 15-year old,the percentage of fine root length in the total root length was 90.9%,88.4%,and 79.9% respectively,the root length density increased with tree age,and the length density of the roots with different diameter classes was 15-year old>10-year old>5-year old.In vertical direction,the root length density decreased after an initial decrease,and the root dry mass density had a significant difference between soil layers.The intensive distribution region of the root biomass density for the trees aged 5-year old,10-year old,and 15-year old was 30-80 cm,30-100 cm,and 30-100 cm soil depth within the 200 cm range from the trees,respectively.In horizontal direction,the root dry mass density at different distances from the trees had significant difference,i.e.,the farther the distance from the tree trunk,the smaller the root dry mass density.In order to decrease the overlap between the tree line and to reduce water and nutrient competition,the row ledge of A.vulgaris cv.Luntaibaixing in arid oasis under irrigation should not be less than 6 m.

相似文章

导出引用
计量
文章访问数: 10
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46