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《Agricultural Research in the Arid Areas》 2015-06
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Analysis and evaluation of cropping cultivation structure in the dryland region of south Ningxia

HOU Xian-qing;LI Rong;JIA Zhi-kuan;HAN Qing-fang;School of Agriculture,Ningxia University;Chinese Institute of Water-saving Agriculture / Key Laboratory of Crop Physi-Ecology and Tillage Science in Northwestern Loess Plateau,Ministry of Agriculture,Northwest A&F University;  
Based on the crop cultivation system in the dryland region of south Ningxia,we analyzed and evaluated the system productivity,composition of crop cultivation and benefit during 2007—2012. The results showed that the grains land area was settled into a range of 6. 19 × 105~ 6. 29 × 105hm~(-2),and vegetables one became increased annually,reaching a maximum amount up to 1.2 folds,whereas melon and fruits ones were decreased. The land use composition gradually changed from mainly single-element structure of grains to pluralistic structure including grains,oil plants,vegetables and others( the ratios of grains over economic plants and fodder were 1 ∶ 0.31 ∶0.12). The crop cultivation composition was inclined to be rational. The system productivity of crop cultivation was clearly enhanced,and the produce and economic productivities of vegetables were the highest( 3.94×104kg·hm~(-2)and 1.26×105yuan·hm~(-2),respectively). The total production value of crop cultivation went up distinctly and became increased 2.11 times more in 2012 than 2007,reaching 1.07×1010yuan. The contributions to the total production value were in the order of vegetables( 0. 49 × 1010yuan),grains( 0. 34 × 1010yuan),oil plants( 0. 12 × 1010yuan),melons and fruits( 0. 07 × 1010yuan). The production value composition of crop cultivation was apt to be balanced. Therefore,because the crop cultivation structure had been adjusted and optimized in the dry land region of south Ningxia,the system stability was gradually reinforced and the benefit became evidently enhanced.
【Fund】: 宁夏大学科学研究基金资助(ZR1265)
【CateGory Index】: F326.1
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