Arid
DOI10.1080/01904167.2012.717160
EFFECTS OF SPATIAL COUPLING OF WATER AND FERTILIZER APPLICATIONS ON ROOT GROWTH CHARACTERISTICS AND WATER USE OF WINTER WHEAT
Shen, YuFang1; Li, ShiQing1; Shao, MingAn2,3
通讯作者Li, ShiQing
来源期刊JOURNAL OF PLANT NUTRITION
ISSN0190-4167
出版年2013
卷号36期号:4页码:515-528
英文摘要

Root systems play vital roles, inter alia in the acquisition of water and nutrients in all plants, and hence in their growth, physiology and metabolism. However, much remains to be learned about the mechanisms affecting root distributions and uptake efficiencies. These are important aspects to understand in order to optimize water and fertilizer applications, especially in arid areas such as the Loess Plateau of China, where a key crop is winter wheat. Therefore, we have studied the effects of spatial coupling of water, nitrogen and phosphorus applications on winter wheat root growth patterns at different growth stages and in different soil layers in soil columns. Observations by minirhizotrons showed root length, surface area, volume and number to be respectively 18.9, 25.3, 29.8 and 8.0% higher under dry treatments than under wet treatments. Simultaneous application of nitrogen and phosphorus in the 090 or 030cm layers promoted extensive spatial distributions of roots, especially in the 030cm layer. In addition, water use efficiency (WUE) was found to be strongly correlated with root length, surface area, volume and number (r 2 = 0.720.80, n = 26), but weakly correlated with root biomass (r 2 = 0.3).


英文关键词water and fertilizer spatial coupling root growth spatial distribution winter wheat water use efficiency
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000314639400001
WOS关键词USE EFFICIENCY ; DEFICIT ; MINIRHIZOTRONS ; AVAILABILITY ; IRRIGATION ; DYNAMICS ; STRESS
WOS类目Plant Sciences
WOS研究方向Plant Sciences
来源机构西北农林科技大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178625
作者单位1.NW Sci Tech Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China;
2.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Peoples R China;
3.Minist Water Resources, Yangling, Peoples R China
推荐引用方式
GB/T 7714
Shen, YuFang,Li, ShiQing,Shao, MingAn. EFFECTS OF SPATIAL COUPLING OF WATER AND FERTILIZER APPLICATIONS ON ROOT GROWTH CHARACTERISTICS AND WATER USE OF WINTER WHEAT[J]. 西北农林科技大学,2013,36(4):515-528.
APA Shen, YuFang,Li, ShiQing,&Shao, MingAn.(2013).EFFECTS OF SPATIAL COUPLING OF WATER AND FERTILIZER APPLICATIONS ON ROOT GROWTH CHARACTERISTICS AND WATER USE OF WINTER WHEAT.JOURNAL OF PLANT NUTRITION,36(4),515-528.
MLA Shen, YuFang,et al."EFFECTS OF SPATIAL COUPLING OF WATER AND FERTILIZER APPLICATIONS ON ROOT GROWTH CHARACTERISTICS AND WATER USE OF WINTER WHEAT".JOURNAL OF PLANT NUTRITION 36.4(2013):515-528.
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