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近几年各地试验推广测土施肥或配方施肥,改变了过去盲目施肥或完全凭经验施肥的做法.计量配方施肥是根据土壤肥力水平、农作物计划产量指标、作物种类及其需肥规律,以及肥料田间试验资料(包括农家肥和化肥),通过计算求出适合的氮、磷、钾肥施用量和最佳配合比,适时施用.计量施肥可以避免乱施、偏施、滥施肥料,使土壤与作物养分供需平衡,从而提高肥料的利用率.一、计量配方施肥模式据有关资料,计量配方施肥模式有多种,并有其相应的计算公式.这里介绍“地力法”计量配方施肥模式.此法计算简便,
In recent years, testing and popularization of soil fertilization or formula fertilization have changed the past practice of blindly fertilizing or completely fertilizing empirically.Metered formula fertilization is based on soil fertility level, crop yield plan, crop type and fertilizer requirement, and fertilizer Field test data (including farmyard manure and chemical fertilizers) calculated by calculating the appropriate amount of nitrogen, phosphorus and potassium fertilizers and the best mix, timely application.Measurement of fertilization can be used to avoid chaos, partial facilities, excessive fertilizers, soil and Crop nutrient balance between supply and demand, so as to improve the utilization of fertilizers.First, the measurement formula fertilization mode According to the relevant information, there are a variety of measurement formula fertilization mode, and its corresponding formula here to introduce “Fertility Law” measurement formula fertilization mode. Law calculation is simple,