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he bei sheng zuo wu zhong zhi qu hua shi ni
Author(s): 
Pages: 13-20
Year: Issue:  2
Journal: Acta Agriculturae Boreali-Sinica

Keyword:  作物种植区活动积温作物布局河北省作物配置谷子草甸土夏玉米冬小麦干燥度;
Abstract: <正> 各种作物都要求一定的光、热、水、肥等环境条件,保证其正常的生长发育,自然条件愈能满足这种要求,则农业生产投资愈小,而收益愈大。将作物配置在最适宜地区,是作物种植区划的中心问题。关于我省作物种植区划问题,前人研究
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