Estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depths
Crop root system plays an important role in the water cycle of the soil-plant-atmosphere continuum. In this study, combined isotope techniques, root length density and root cell activity analysis were used to investigate the root water uptake mechanisms of winter wheat (Triticum aestivum L.) under d...
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| Format: | Article |
| Language: | English |
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Elsevier
2016-04-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311915612588 |
| _version_ | 1819010372925915136 |
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| author | Fei GUO Juan-juan MA Li-jian ZHENG Xi-huan SUN Xiang-hong GUO Xue-lan ZHANG |
| author_facet | Fei GUO Juan-juan MA Li-jian ZHENG Xi-huan SUN Xiang-hong GUO Xue-lan ZHANG |
| author_sort | Fei GUO |
| collection | DOAJ |
| description | Crop root system plays an important role in the water cycle of the soil-plant-atmosphere continuum. In this study, combined isotope techniques, root length density and root cell activity analysis were used to investigate the root water uptake mechanisms of winter wheat (Triticum aestivum L.) under different irrigation depths in the North China Plain. Both direct inference approach and multisource linear mixing model were applied to estimate the distribution of water uptake with depth in six growing stages. Results showed that winter wheat under land surface irrigation treatment (Ts) mainly absorbed water from 10–20 cm soil layers in the wintering and green stages (66.9 and 72.0%, respectively); 0–20 cm (57.0%) in the jointing stage; 0–40 (15.3%) and 80–180 cm (58.1%) in the heading stage; 60–80 (13.2%) and 180–220 cm (35.5%) in the filling stage; and 0–40 (46.8%) and 80–100 cm (31.0%) in the ripening stage. Winter wheat under whole soil layers irrigation treatment (Tw) absorbed more water from deep soil layer than Ts in heading, filling and ripening stages. Moreover, root cell activity and root length density of winter wheat under Tw were significantly greater than that of Ts in the three stages. We concluded that distribution of water uptake with depth was affected by the availability of water sources, the root length density and root cell activity. Implementation of the whole soil layers irrigation method can affect root system distribution and thereby increase water use from deeper soil and enhance water use efficiency. |
| first_indexed | 2024-12-21T01:11:13Z |
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| id | doaj.art-7174de37b20347eb962e24ffb1ed8ea0 |
| institution | Directory Open Access Journal |
| issn | 2095-3119 |
| language | English |
| last_indexed | 2024-12-21T01:11:13Z |
| publishDate | 2016-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj.art-7174de37b20347eb962e24ffb1ed8ea02022-12-21T19:20:55ZengElsevierJournal of Integrative Agriculture2095-31192016-04-01154891906Estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depthsFei GUO0Juan-juan MA1Li-jian ZHENG2Xi-huan SUN3Xiang-hong GUO4Xue-lan ZHANG5College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R.China; GUO Fei, Mobile: +86-15803430986College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R.China; Correspondence MA Juan-juan, Mobile: +86-13834556370College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R.ChinaShanxi Conservancy Technical College, Yuncheng 044004, P.R.ChinaCollege of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R.ChinaCollege of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R.ChinaCrop root system plays an important role in the water cycle of the soil-plant-atmosphere continuum. In this study, combined isotope techniques, root length density and root cell activity analysis were used to investigate the root water uptake mechanisms of winter wheat (Triticum aestivum L.) under different irrigation depths in the North China Plain. Both direct inference approach and multisource linear mixing model were applied to estimate the distribution of water uptake with depth in six growing stages. Results showed that winter wheat under land surface irrigation treatment (Ts) mainly absorbed water from 10–20 cm soil layers in the wintering and green stages (66.9 and 72.0%, respectively); 0–20 cm (57.0%) in the jointing stage; 0–40 (15.3%) and 80–180 cm (58.1%) in the heading stage; 60–80 (13.2%) and 180–220 cm (35.5%) in the filling stage; and 0–40 (46.8%) and 80–100 cm (31.0%) in the ripening stage. Winter wheat under whole soil layers irrigation treatment (Tw) absorbed more water from deep soil layer than Ts in heading, filling and ripening stages. Moreover, root cell activity and root length density of winter wheat under Tw were significantly greater than that of Ts in the three stages. We concluded that distribution of water uptake with depth was affected by the availability of water sources, the root length density and root cell activity. Implementation of the whole soil layers irrigation method can affect root system distribution and thereby increase water use from deeper soil and enhance water use efficiency.http://www.sciencedirect.com/science/article/pii/S2095311915612588hydrogen and oxygen stable isotopesmultisource linear mixing modelwinter wheatdistribution of water uptake with depth |
| spellingShingle | Fei GUO Juan-juan MA Li-jian ZHENG Xi-huan SUN Xiang-hong GUO Xue-lan ZHANG Estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depths Journal of Integrative Agriculture hydrogen and oxygen stable isotopes multisource linear mixing model winter wheat distribution of water uptake with depth |
| title | Estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depths |
| title_full | Estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depths |
| title_fullStr | Estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depths |
| title_full_unstemmed | Estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depths |
| title_short | Estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depths |
| title_sort | estimating distribution of water uptake with depth of winter wheat by hydrogen and oxygen stable isotopes under different irrigation depths |
| topic | hydrogen and oxygen stable isotopes multisource linear mixing model winter wheat distribution of water uptake with depth |
| url | http://www.sciencedirect.com/science/article/pii/S2095311915612588 |
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