| Evaluation of irrigation water use efficiency based on method set and DEA model in Heilongjiang Province |
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| DOI：10.7606/j.issn.1000-7601.2019.06.18 |
| Key Words: method set model DEA model irrigation water use efficiency comprehensive evaluation Heilongjiang Province |
| Author Name | Affiliation | | LIANG Jingxi | College of Economics Management, Harbin University of Science and Technology, Harbin 150000, China | | ZHANG Ankang | College of Economics Management, Harbin University of Science and Technology, Harbin 150000, China | | XU Yaowen | College of Water Resources and Civil Engineering, Northeast Agricultural University, Harbin 150000, China | | LI Chenyang | College of Water Resources and Civil Engineering, Northeast Agricultural University, Harbin 150000, China |
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| Abstract: |
| In order to comprehensively and scientifically evaluate the utilization of agricultural irrigation water in irrigation areas, using DEA model as a comparative reference, two indicators, canal system, and field, were selected to rank and calculate the water use efficiency in 20 irrigation areas in Heilongjiang Province. The main conclusions were as follows: The sequencing results of 20 irrigation districts evaluated by the method set model were all tested by Spearman test, which solved the problem of inconsistent results of different evaluation methods and was consistent with the sequencing results obtained by DEA model. The results of method set model showed that the efficiency values of Fuyu, Yongfa, Anbang River, Longtou Bridge, and Shilong irrigation districts were lower and their efficiency values were 0.58, 0.55, 0.54, 0.51, and 0.45. The average correlation between irrigation water use efficiency and canal system efficiency was 1.779, and the average correlation between irrigation water use efficiency and field efficiency was 1.229, which was greatly affected by the water use efficiency of canal system, but the field water efficiency was less affected. In order to reduce the loss of irrigation water in the water supply and distribution links of canals, measures such as lining of canals, rational planning of canal system layout and water saving measures such as controlling irrigation technology, spraying and dripping irrigation can be adopted to improve the efficiency of irrigation water use. |
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