Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

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.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved