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mi shan shi shui dao sheng chan quan cheng ji xie hua cun zai de wen ti fen xi
Author(s): 
Pages: 63
Year: Issue:  5
Journal: Farm Machinery Using & Maintenance

Abstract:  一、密山市水稻机械化生产概况 密山市总人口42万多人,总耕地面积14万hm2,农业机械总动力24.8万kW.种植水稻有几百年的历史,但历史上生产水稻都是由人工作业,由畜力翻地、人工整地、人工撒籽直播、人工除草和人工收获,水稻种植面积小,产量低,管理差.
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