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《Research of Agricultural Modernization》 2006-02
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Analysis of Restricted Factors in the Process of Utilizing Precipitation Resource in Arid Regions of Loess Plateau

HU Bing-hui,LIAO Yun-cheng,HE Jin-hong,CHENG Tian-jiao,YU Xi-shui(Agronomy College,Northwest Sci-Tech University of Agriculture and Forestry,Yangling Shaanxi 712100,China)  
Loess plateau is the important implement region of dry land agriculture in our country,and the water source of agriculture production mainly depends on precipitation.But the precipitation in this region is not only limited,but also badly-distributed;Many heavy rains and torrential rains,in addition to not level topography,cause much waste of limited precipitation resource;Much loss in saved precipitation through evaporation in soil,and the poor science and technology quality of farmer's;Besides,the low efficiency of utilization of water exists in current cropping system and most crop communities;More generally,the low soil nourishment and the increasing use of land to expand production on farming management strongly restrict the utilization of limited precipitation resource.
【Fund】: 国家自然科学基金《西北旱区降水资源化及降水生产潜力增进研究》;; 《黄土高原旱作农田覆盖微集水保护性耕作技术研究》(30070439 30300213);; 西北农林科技大学青年学术骨干支持计划《保护性耕作的土壤生态环境变化机理及技术体系研究》
【CateGory Index】: F323.213
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