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中文摘要：
为了促进武威市凉州区农田生态系统的良性循环,文中对武威市农田生态系统的投能结构、氮磷钾投入产出状况和价值转换效益等方面的分析,论述了其能流、物流和价值流的数量特征。结果表明：该区农户已经基本上实现了机械化,已完成了传统农业向现代农业的转化,指出了农田生产中的限制因素及解决的对策。
英文摘要：
In order to enhance the well cycle of the farmland ecosystem in Liangzhou district,Wuwei City,we have studied its energy input and its utilization efficiency、input and output situation of nitrogen,phosphorous and potassium,and profit of value-transforming etc,and state their quantantive characteristics of material flow energy flow and value flow the results show： the farmers have basically realized mechanization and completed the transformation of traditional agriculture to modern agriculture.We point out the problems in the farmland producing and how to solve them.
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