IGSNRR OpenIR  > 历年回溯文献
根钻不同取样法对估算根系分布特征的影响
刘凤山; 周智彬; 胡顺军; 杜海燕; 陈秀龙
Source Publication草业学报
ISSN1004-5759
2012
Issue02Pages:294-299
Keyword根钻法 根系 分布特征 膜下滴灌
Abstract利用根钻法得到的代表性值估算根系整体值的问题尚未得到解决。针对文献中普遍采用的3孔取样法,本研究采用根钻加密采集棉花根系,利用根系干重分析了水平方向取3孔、5孔和7孔条件下计算单株根系干重的精确性。结果表明在水平方向上取5孔能较准确的估算单株棉花的总干重;取3孔仅在表层具有较好的代表性,对裸行30cm土层以下根系干重不能准确描述,其决定系数低,且未达到显著水平,对于根系的估算有较大的偏差;在裸行、窄行和宽行分别取2孔,1孔和1孔是保证准确度前提下最为省力的取样方法。根系干重在垂直方向上呈单峰曲线,40cm土层以上,根系干重急剧下降,40cm土层以下变化区域缓和,在裸行70~90cm处有小幅度的增加;在水平方向上宽行根重大于裸行根重。
Language中文
Document Type中文期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/26178
Collection历年回溯文献
Recommended Citation
GB/T 7714
刘凤山,周智彬,胡顺军,等. 根钻不同取样法对估算根系分布特征的影响. 2012.
Files in This Item: Download All
File Name/Size DocType Version Access License
根钻不同取样法对估算根系分布特征的影响.(279KB) 开放获取LicenseView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[刘凤山]'s Articles
[周智彬]'s Articles
[胡顺军]'s Articles
Baidu academic
Similar articles in Baidu academic
[刘凤山]'s Articles
[周智彬]'s Articles
[胡顺军]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[刘凤山]'s Articles
[周智彬]'s Articles
[胡顺军]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 根钻不同取样法对估算根系分布特征的影响.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.