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笔者运用经济效益分析方法，对“玉米大垄双行精播、深施化肥、覆膜机械化技术”进行了经济效益分析，并提出了评价意见。
The author uses the economic benefit analysis method to carry on the economic benefit analysis to “corn wide ridge double row sowing, deep applying fertilizer, laminating mechanization technology”, and puts forward the opinion for evaluation.