山东省粮经作物播种比例演变及结构优化研究——基于1986~2015统计数据
Publisher: 国家哲学社会科学学术期刊数据库
E-ISSN: 1005-9121|38|7|164-171
ISSN: 1005-9121
Source: 中国农业资源与区划, Vol.38, Iss.7, 2017-01, pp. : 164-171
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Abstract