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设立马铃薯不同肥料对比试验,通过试验综合比较肥料投入,作物产量,经济效益,肥料利用率等指标,客观评价施肥效益。
The experiment of contrasting different fertilizers of potato was set up to evaluate the efficiency of fertilization by objectively comparing the indexes of fertilizer input, crop yield, economic benefit, fertilizer utilization rate and so on.