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| DOI：0.13522/j.cnki.ggps.2019105 |
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| Study on Suitable Control Scale of Low Pressure Pipeline Irrigation in Rice Growing Area of Jiangsu Province |
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GUO Xiangping, WANG Min, CHEN Sheng, ZHANG Erzi
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1.College of Agricultural Engineering, Hohai University, Nanjing 210098, China;2.Jiangning District Water Bureau, Nanjing 211100, China
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| Abstract: |
| 【Objective】Considering the economy and practicability of the project as well as the reality of Jiangsu Province, the appropriate control scale of low-pressure pipeline irrigation project suitable for Jiangsu Province is proposed.【Method】The influencing factors of suitable control scale of pipeline irrigation system in rice-growing areas of Jiangsu Province were preliminarily analyzed, and the system optimization model of irrigation pipe network was established and solved by the boundary flow method. According to the optimization model, the annual cost of the pipe network system under different irrigation project scales was estimated, and the relationship between the system control scale and the annual cost per unit area was obtained.【Result】Drawing the relationship diagram between the system control scale and the annual cost per unit area, considering the investment in the project construction and the later operation, management and maintenance, it was suggested that the appropriate control scale for the pipe irrigation system project was 23~30 hectares.【Conclusion】Proper selection of the control scale of the pipeline irrigation project according to the actual situation was of practical significance for saving project investment and management and maintenance in the later period of project operation. |
| Key words: Jiangsu province; low pressure pipeline; control scale; optimization model; boundary flow method |
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