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以平原县市测土配方施肥项目为例,对土壤养分丰缺指标、肥料配方、植物养分施用指标和施肥建议单制作等问题进行了探索,提出了按照不同区域特点建立分级评价指标、结合农民施肥习惯和产量水平确定施肥指标、以需要使用的P与K比值为基础设计肥料配方,以每个采样测试点为单元建立施肥决策系统并制作施肥建议单的基本思路。
Taking plain soil testing and fertilizer project in plain county as an example, this paper explored the problems such as soil nutrient abundance and deficiency index, fertilizer formula, plant nutrient application index and fertilization suggestion list production, and proposed the establishment of grading evaluation index according to different regional characteristics, Fertilization habits and yield levels to determine fertilization indicators, based on the need to use the ratio of P and K fertilizer formula designed to establish a fertilization decision-making system for each sample test point and the basic idea of the production of fertilizer proposals.