| Study on the optimization of water-saving cropping structure in Weibei dryland——With Changwu County as example |
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| DOI：10.7606/j.issn.1000-7601.2009.04.42 |
| Key Words: Weibei dryand water-saving cropping structure multi-objective fuzzy optimization model |
| Author Name | Affiliation | | GAO Qiong | College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China | | XIE Xiaoyu | College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China | | WANG Lixiang | College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China | | WANG Longchang | College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China | | CAO Qunhu | Changwu Agricultural Technology Extension Center, Changwu, Shaanxi 713600，China | | DUAN Changlin | Changwu Agricultural Technology Extension Center, Changwu, Shaanxi 713600，China |
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| Abstract: |
| Based on fuzzy optimization theory, with Changwu County as example, the planting structure situation of typical dryland farming region was analyzed. In order to attain the maximum comprehensive benefits in economy, society and ecology, the thesis established a multi-objective fuzzy optimization model of water-saving cropping structure, and concluded the optimized project in the year of 2010, 2015 and 2020. According to the project, compared with 2007, the crop planting area decreased by 11%, 19% and 24% respectively; economic crop planting area increased by 7%, 12% and 17%; and fodder crop planting area raised by 8%. The utilization efficiency of rainfall ascend from 6.86 kg/(mm·hm2) in 2007 to 14.08 kg/(mm·hm2) in 2020. |
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