中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
土-根界面行为对单根吸水的影响

文献类型:期刊论文

作者黄明斌 ; 康绍忠
刊名水利学报
出版日期1997
期号7页码:31-36
其他题名The influences of soil root interface behavior on roots uptake soil water
合作状况其它
中文摘要本文主要讨论了冬小麦根尖在土壤水分胁迫下发生收缩,产生土根空气界面(ψs≤-01MPa),从而影响土壤根系的水分动力学性质.试验观测到的最小根直径为初始根直径的52%(ψs=-11MPa).土根界面厚度随根直径的减小而增大,最大厚度为0117mm.土壤充分供水(0—-013MPa),根径向导度最小,是根吸水的限制因素;土壤水分胁迫(-012—-105MPa),土根界面导度最小,变为根吸水的限制因素;土壤严重干旱(<-105MPa),土壤导度最小,土壤水分不足限制了根吸水.
英文摘要Roots shrink under some environment condition, its degree increases with the decrease of soil water potential. Winter wheat root tips shrink to about 52% of their original diameter when their water potential decreases to -1 1MP. Water movement to or from a root depends on soil effective conductance Cs, soil root interface conductance Csr and root conductance Cr. Water movement into roots from wet soil during 0—0 13MP is limited by Cr. As soil becomes dry, water movement was limited mainly by Cr. As the s...
语种中文
公开日期2010-12-11
源URL[http://ir.iswc.ac.cn/handle/361005/3294]  
专题水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式
GB/T 7714
黄明斌,康绍忠. 土-根界面行为对单根吸水的影响[J]. 水利学报,1997(7):31-36.
APA 黄明斌,&康绍忠.(1997).土-根界面行为对单根吸水的影响.水利学报(7),31-36.
MLA 黄明斌,et al."土-根界面行为对单根吸水的影响".水利学报 .7(1997):31-36.

入库方式: OAI收割

来源:水土保持研究所

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