Nutrient effects on diurnal variation and magnitude of hydraulic lift in winter wheat
文献类型：期刊论文
| 作者 | Shen Yufang ; Zhang Yang ; Li Shiqing |
| 刊名 | AGRICULTURAL WATER MANAGEMENT
 |
| 出版日期 | 2011 |
| 卷号 | 98期号:10页码:1589-1594 |
| 关键词 | Winter wheat Hydraulic lift Soil water content Nutrient Time domain reflectometry (TDR) |
| 通讯作者 | Li, SQ |
| 英文摘要 | We have investigated hydraulic lift by winter wheat in response to four fertilizer treatments nitrogen (N). phosphorus (P), nitrogen and phosphorus (NP) and control (CK, no fertilizer) in a greenhouse experiment, in which root systems of wheat plants were split between a drier, upper layer and a wetter, lower layer. The soil volumetric water content (Ov) was measured at 2 h intervals in the upper layer by time domain reflectometry (TDR). Under the N, NP and CK treatments the fluctuations in this parameter were maximal during the blooming stage, amounting to 0.0038. 0.0127 and 0.0100 m(3) water m(-3) soil, respectively, but under the P treatment it peaked at 0.0116 m(3) water m(-3) soil during the grain-filling stage. Increases in the v of the upper layer occurred from 22:00 to 04:00 (6.7. 11.5. 13.5 and 7.5% under the N, P. NP and CK treatments, respectively), during the blooming stage. The wheat roots under the NP treatment showed the highest level of hydraulic lift across the entire growth period (0.3762 m(3)m(-3)); 1.36, 3.49 and 1.02 times higher than under the CK. N and P treatments, respectively. Hydraulic lift was shown to be driven by the soil water potential difference between the upper and lower layers using controls in which the soil moisture content of the two layers was the same. (C) 2011 Elsevier B.V All rights reserved |
| 收录类别 | SCI |
| 公开日期 | 2012-05-31 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/4693]  |
| 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 | Shen Yufang,Zhang Yang,Li Shiqing. Nutrient effects on diurnal variation and magnitude of hydraulic lift in winter wheat[J]. AGRICULTURAL WATER MANAGEMENT,2011,98(10):1589-1594. |
| APA | Shen Yufang,Zhang Yang,&Li Shiqing.(2011).Nutrient effects on diurnal variation and magnitude of hydraulic lift in winter wheat.AGRICULTURAL WATER MANAGEMENT,98(10),1589-1594. |
| MLA | Shen Yufang,et al."Nutrient effects on diurnal variation and magnitude of hydraulic lift in winter wheat".AGRICULTURAL WATER MANAGEMENT 98.10(2011):1589-1594. |
入库方式： OAI收割
来源：水土保持研究所
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