Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1080/01904167.2012.717160 |
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
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ISSN | 0190-4167 |
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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