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《Xinjiang Agricultural Sciences》 2010-01
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Research on Evaluation of Soil Fertilities of Farmland at County Level in Xinjiang based on GIS

CHEN Shu-huang1,GENG Qing-long1,ZHANG Yun2,ZHUANG Yu2,DONG Ju-he3,JIA Deng-quan3,LAI Bo3(1.Institute of Soil,Fertilizer and Agricultural Water-saving,Xinjiang Academy of Agricultural Sciences,Urumqi Xinjiang,830091;2.Agricultural Techniques Extension Center of Kuche County,Kuche Xinjiang 842000,China;3.Soil and Fertilizer Station,Agricultural Department of Xinjiang,Urumqi 830001,China)  
【Objective and Method】Based on the geographic information system(GIS) and the second general survey soil,overlaying the current landuse map with the basic farmland protection map and the soil map,forming 7 352 patches,which are used as the basic management and evaluation cells.This research selected twelve influencing factors from three aspects such as soil nutrient content,profile situation and land management,and the evaluation system and model of farmland fertility was built up.The grade of arable land productivity was formed according to the theory of Fuzzy Mathematics,Telphi Principle and Analytic Hierarchy Program,and the farmland fertility of Kuche county and analysis of its spatial distribution were evaluated.【Result and Conclusion】The results suggest that 73 553.52 hm2 farmlands could be divided into six grades,the grade one was 7 713.07 hm2,the grade two was 20 526.13 hm2,the grade three was 14 621.53 hm2,the grade four was 11 987.8 hm2,the grade five was 11 302.33 hm2 and the grade six was 7 402.53 hm2,the fertility of grade one to six account for 10.49%,27.91%,19.88%,16.3%,15.37%,10.06% respectively.
【Fund】: 农业部“测土配方施肥试点补贴资金项目”
【CateGory Index】: S158
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