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farming system
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farming system
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农学
农作制度
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farming system
农作制度
一个区域或生产经营单位对自然、生物、社会经济等各类农业要素进行总体安排,从系统角度研究农业生产与自然环境及人工环境关系,以及农业系统中种、养、加及农、林、牧产业协调发展的综合技术体系。
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Huaihe River flood in 1975
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Huainan Coalfield
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