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一、前言随着马铃薯单位面积产量的不断提高,化肥用量随之上升,对每亩耕地投入的活劳动和物化劳动逐年增加,出现了投入大量劳动消耗,技术经济效益相对降低的状况。本研究的目的是:从提高经济效益的角度,研究马铃薯生产中物化劳动消耗的氮肥投施量,降低劳动消耗,从中找出规律,建立氮肥投施的最佳方案,用尽量少的化肥投入,获得尽可能多的产品产量。
I. INTRODUCTION With the continuous improvement of output per unit area of potato, the amount of fertilizer used increases accordingly. The living and materialized labor input per acre of cultivated land has been increasing year by year, resulting in a relatively large amount of labor consumption and a relatively lower technical and economic benefits. The purpose of this study is to study the amount of nitrogen fertilizer consumed by materialized labor in potato production and reduce labor consumption from the perspective of improving economic efficiency and find the best way to apply nitrogen fertilizer and to use as little fertilizer as possible Get as much product output as possible.