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| DOI： |
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| Integrated Crop Coefficients Approach of Interplanting Mode in Hetao Irrigation Area |
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DAI Jiaxin, LI Jiuhao, SHI Haibin, ZHU Li, TIAN Delong, YAN Jianwen, XIA Yuhong
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College of Water Conservancy and Civil Engineering, South China Agriculture University, Guangzhou 510642, China; College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Huhhot 010018, China; 3.Yijinhuoluo, Ordos City, Inner Mongolia Water Resources Team, Ordos 017200, China; 4.Institute of Water Resources for Pastoral Area of China Institute of Water Resources and Hydropower Research, Huhhot 010020, China; 5.Water Conservancy Science Institute of Bayannur In Inner Mongolia, Bayannur 015000, China
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| Abstract: |
| Based on the method which was recommended by FAO, the single and dual crop coefficients for three interplanting modes (wheat interplanting maize with plastic film mulching, wheat interplanting maize without film mulching and wheat interplanting oil sunflower) were calculated respectively. The experimental station was located in Deng Kou, Hetao irrigation district in Inner Mongolia. The results showed that the three interplanting modes had two peaks of water requirement during the whole growth stage. Crop coefficient in coexistence stage showed that the single value calculation results were higher than the dual values approach, while it was contrary in a single crop growth stage. There was significant difference in the coexistence stage and little difference in the independent phase for a single crop whether single or dual crop coefficient approach to calculate the integrated ET for interplanting crops. The article provided more detailed birth stages division and named separately for the crops of interplanting mode, expecting to provide more accurate foundations of calculation for crop evapotranspiration of interplanting mode. |
| Key words: interplanting mode; integrated crop coefficient approach; integrated ET; wheat; maize; oil sunflower |
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