Dynamics of water and ion transport driven by corn canopy in the Yellow River basin
文献类型：期刊论文
| 作者 | Kitano, Masaharu; Yasutake, Daisuke; Kobayashi, Tetsuo; Hidaka, Kota; Wajima, Takahiro; Wang, Weizhen; He, Wenjun |
| 刊名 | BIOLOGIA
 |
| 出版日期 | 2006 |
| 卷号 | 61页码:S275-S279 |
| 关键词 | active and selective uptake transpiration stream water and ion transport |
| ISSN号 | 0006-3088 |
| 通讯作者 | Kitano, Masaharu(kitano@kochi-u.ac.jp) |
| 英文摘要 | Water and ion balance in a corn field in the semi-arid region of the upper Yellow River basin (Inner Mongolia, China) was analyzed with special reference to transpiration stream and selective nutrient uptake driven by the crop canopy. During the crop development stage (June 7 to July 17, 2005), crop transpiration and soil evaporation were evaluated seperately on a daily basis, and concentrations of NO(3)(-), PO(4)(3-), K(+), Na(+), Ca(2+) and Cl(-) ions in the Yellow River water, irrigation water, ground water, soil of the root zone and xylem sap of the crop were analyzed. The crop transpiration accounted for 83.4% of the evapotranspiration during the crop development stage. All ions except for Na(+) were highly concentrated in the xylem sap due to the active and selective uptake of nutrients by roots. In particular, extremely high concentrations of the major essential nutrients were found in the nighttime stem exudate, while these concentrations in the river water, the irrigation water, the ground water and the root-zone soil were lower. On the other hand, Na(+), which is not the essential element for crop growth, was scarcely absorbed by roots and was not highly concentrated in the xylem sap. Consequently, Na(+) remained in the ground water and the root-zone soil at higher concentrations. These results indicate that during the growing season, crop transpiration but not soil evaporation induces the most significant driving force for mass flow (capillary rise) transporting the ground water toward the rhizosphere, where the dynamics of ion balance largely depends on the active and selective nutrient uptake by roots. |
| 收录类别 | SCI ; ISTP |
| WOS研究方向 | Life Sciences & Biomedicine - Other Topics |
| WOS类目 | Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000240688500012 |
| 出版者 | VERSITA |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555848 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Kitano, Masaharu |
| 作者单位 | 1.Kochi Univ, Fac Agr, Kochi 7838502, Japan 2.Kyushu Univ, Fac Agr, Fukuoka 8128581, Japan 3.CAS, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China 4.Chinese Acad Agr Sci, Inst Agroenvironm & Sustainable Dev, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kitano, Masaharu,Yasutake, Daisuke,Kobayashi, Tetsuo,et al. Dynamics of water and ion transport driven by corn canopy in the Yellow River basin[J]. BIOLOGIA,2006,61:S275-S279. |
| APA | Kitano, Masaharu.,Yasutake, Daisuke.,Kobayashi, Tetsuo.,Hidaka, Kota.,Wajima, Takahiro.,...&He, Wenjun.(2006).Dynamics of water and ion transport driven by corn canopy in the Yellow River basin.BIOLOGIA,61,S275-S279. |
| MLA | Kitano, Masaharu,et al."Dynamics of water and ion transport driven by corn canopy in the Yellow River basin".BIOLOGIA 61(2006):S275-S279. |
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来源：寒区旱区环境与工程研究所
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