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《System Sciences and Comprehensive Studies in Agriculture》 2004-02
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Comprehensive evaluation on the productive potential of crops and its exploitation countermeasures in south Ningxia

WANG Long-chang~(1,2),XIE Xiao-yu~3,WANG Li-xiang~1,JIANG Jun~2 (1. Northwest Sci-tech University of Agriculture and Forestry, Yangling 712100, China; 2. Nanjing Agricultural University, Nanjing 210095, China;3.Yangling Vocational and Technical College, Yangling 712100, China)  
On the basis of agricultural resources in south Ningxia, the paper makes a systematic analysis on heat productive potential and rainfall productive potential of main crops in different rainfall years and at different ecological zones. The results show that in line with heat productive potential, the crops can be put in order as: alfalfaspring wheatpotatowinter wheatmillet and panicflaxpea; and in line with rainfall productive potential, the crops can be put in order as: alfalfapotatomillet and panicwheatflaxpea. At present, the exploitation degree of general productive potential is 33.6%-42.7%, with the mean level of 36.8%. So there is still 63.2% of potential that has not been exploited. Moreover, it expounds the principal technological strategies to open up and to enhance productive potential of farmlands in the dry-land regions.
【Fund】: 国家科技攻关项目(96-004-04-07);; 国家"863"计划项目(2001AA245041);; 国家农业部"948"项目(961013)
【CateGory Index】: S11
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