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黑龙江省是我国大豆的主要产区，研究施肥对产量的影响可以加强对大豆生产的指导．本文运用所建立的大豆产量模型与降水型模型，采用频数分析法，求出在不同的气候类型下（丰年、平年、欠年），为了使大豆的单产达到某一水平，所需的各种肥料投入量的95%置信区间．这对于根据不同气候类型，在年初计划大豆的生产规模、各种肥料的投入量，安排农业生产都具有实用价值．
Heilongjiang Province is the main producing area of soybean in China. Studying the influence of fertilization on the yield can strengthen the guidance of soybean production. In this paper, using the established soybean yield model and precipitation model, using frequency analysis method, obtained under different climate types (abundance, year, year), in order to achieve a certain level of soybean yield, the required variety 95% confidence interval for fertilizer input. This is of practical value for planning the production of soybean at the beginning of the year, input of various fertilizers and arranging agricultural production according to different climate types.