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

A Research on Characteristics and Rational Exploitation of Soda Saline Land in the Western Songnen Plain

LI Xiujun,LI Qusheng,WANG Zhichun,LIU Xingtu (The Northeast Institute of Geography and Agricultural Ecology,CAS,Changchun 130021,China)  
The total area of soda saline land reaches 3 730 000hm 2 in the western Songnen Plain that is one of the three largest soda saline regions in the world.Such factors as special geomorphologic conditions,constitution of primitive soil,climate,groundwater level and its salt content,particularly human activities in recently years,contribute to the increase in soda saline area.As the salinized degree rises,heavy soda saling area increases 1.4% per year and ecological environment in the western district worsens,which restricts agricultural development of the district.In accordance with the characteristics of soda saline dry farmland,meadow and wetland,we can adopt the following five models,such as the model of planting rice in soda saline lowlying land,the model of reedgrowing and fishfarming in soda saline marsh,the model of fishfarming in the saling lake and pond,the model of comprehensive improving and fertilizing soil,which includes cultivating sodaenduring crop and herbage,applying light salt water to drip soil,employing physical and chemical method to improve soil in soda saline dry farmland,and the model of restoring soda saline meadow.Therefore the increase of soda saline land will be limited,and ecological environment will be improved.Economic,ecological and social benefits of regional development will be well coordinated.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved