| Water consumption characteristic and yield changes in response to different root partition patterns in wheat-maize intercropping system |
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| DOI：10.7606/j.issn.1000-7601.2016.04.31 |
| Key Words: wheat-maize intercropping system root partition pattern soil water water use efficiency yield |
| Author Name | Affiliation | | FENG Fu-xue | College of Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | KONG Xue-fu | Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | YIN Wen | Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | HU Fa-long | Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | ZHAO Cai | Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | CHAI Qiang | Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | YANG Cai-hong | Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu 730070, China |
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| Abstract: |
| A field experiment was conducted from March to October in 2009 to investigate the effects of different root partition patterns (roots of intercropped wheat-maize were separated by plastic film (PW//C), and nylon (NW//C), no-root-separation (W//C), sole wheat, and sole maize) on soil water, soil evaporation and water use efficiency (WUE) of wheat-maize intercropping system. The results indicated that the intercropping systems significantly affected the characteristic of soil water consumption that markely improved crop yield and WUE during two crops growing stage. Root partition patterns significantly decreased soil water dynamic and crop yield. Before harvesting wheat, W//C, NW//C and PW//C treatments improved soil water storage of maize strip by 2.38%, 3.82% and 6.13% than that of wheat strip, respectively. However, after harvesting wheat, NW//C and PW//C treatments decreased soil water storage of maize strip by 5.41% and 16.07% than that of wheat strip, respectively. However, no significant difference was found in soil water storage between wheat and maize strips by W//C treatment. Root partition patterns significantly increased the soil evaporation, and NW//C and PW//C treatments significantly increased soil evaporation by 6.71% and 20.13% compared with NW//C treatment, respectively. Compared to the weighted averages of sole wheat and maize, W//C, NW//C and PW//C treatments significantly improved yield by 33.60%, 26.93% and 24.69%, water consumption by 0.2%,1.02% and 6.69%, and water use efficiency(WUE) by 34.93%, 26.67% and 17.80%, respectively. Compared to NW//C and PW//C treatments, W//C treatments significantly improved yield by 5.25% and 7.14%, decreased water consumption by 1.21% and 6.64%, and improved WUE by 6.52% and14.54%, respectively. |
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