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《Journal of Irrigation and Drainage》 2015-08
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Contribution of Planting Structure Adjustment of Grain Crops to Economical Utilization of Water Resources in Beijing

MA Yujun;ZHU Nanhuanuowa;WANG Xiaoxing;State Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University;College of Resources Science and Technology,Beijing Normal University;College of Resource Environment and Tourism,Capital Normal University;  
The effect of planting structure adjustment of crops to the economical utilization of water resources was researched to provide an important reference for the agricultural structure adjustment and the optimal allocation of water resources in water shortage areas.Based on the calculation methods of crop water requirements and irrigation water requirements,which was commended by food and agriculture organization of the United Nations,the planting structure adjustment of main grain crops was analyzed from 1990 to 2012in Beijing,and its contribution to the economical utilization of water resources was estimated.The results indicated that:1Due to the planting structure adjustment of grain crops,the irrigation water requirements in Beijing decreased by 7.50×108 m3 from 1990 to 2012,which accounted for 60.29% of the simultaneous reduction of agricultural water consumption;2From 1990 to 2012,the contribution of planting structure adjustment of winter wheat to economical utilization of water resources was the highest,which accounted for 13.07%,55.51% of the total water resources and the agricultural water consumption,respectively.Based on the current planting structure and the irrigation water requirements of different crops,the primary crop for Beijing to adjust in the future is winter wheat.
【Fund】: 国家自然科学基金项目(41301013);; 高等学校博士学科点专项科研基金项目(20120003120019);; 北京师范大学自主科研基金项目(2012LYB21)
【CateGory Index】: S344;S274
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