以陕西长武县为例,对典型旱作农区种植业结构的现状进行了分析,基于模糊优选理论,以经济、社会、生态三者综合效益最大为目标,构建节水型种植结构多目标模糊优化模型,提出长武县2010、2015、2020年的节水型种植结构优化调整方案.依据方案,2010、2015、20 20年粮食作物种植面积比2007年分别下降11%、19%、24%;经济作物种植面积提高7%、12%、 17%;饲草作物提高8%;降水资源的利用效率从2007年的6.86 kg/(mm*hm2) 上升到2020年的14.08 kg/(mm*hm2).%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, 201 5 and 2020. According to the project, compared with 2007, the crop planting area decreased by 11%, 19% and 24% respectively; economic crop planting area increas ed by 7%, 12% and 17%; and fodder-crop planting area raised by 8%. The utilizat ion efficiency of rainfall ascend from 6.86 kg/(mm*hm2) in 2007 to 14.08 kg/(mm*hm2) in 2020.
展开▼
