Case Base for Fertilizer Recommender System

Dataset that contains recommendations for NPK fertilizer rates for different cases of climatic and soil conditions in coffee crops in the Cauca region in Colombia. The variables of this dataset are described below: Density: Represents the planting density of plants in a coffee crop, that is, the number of plants per hectare. Shadow coverage: Indicates the shade per hectare of the coffee crop, measured on a scale from 0 to 1. Season: Refers to the climatic season to which the year in which fertilization is to be carried out was classified. 'Seca' represents the dry season, 'Lluviosa' represents the rainy season and 'Normal' represents the normal season. Humidity: Represents the percentage of moisture in the soil, measured on scales from 0 to 1. N: It is the level of N in the soil, measured in mg/Kg. P: It is the level of P in the soil, measured in mg/Kg. K: It is the level of K in the soil, measured in mg/Kg. pH: It is the pH level in the soil. Cond_N: It is the rate of nitrogenous fertilizer to recommend. Cond_P: It is the rate of phosphorus fertilizer to recommend. Cond_K: It is the rate of potassium fertilizer to recommend. Note: Fertilizer rates are represented as follows: 1 is low rate, 2 is normal rate, 3 is high rate and 4 is very high rate. The fertilizer rate depends on the sowing density, this is indicated in the corresponding research article. Plus_A and Plus_B are additional recommendations, regarding irrigation and soil and crop care.本数据集收录了哥伦比亚考卡（Cauca）地区咖啡种植中，适配不同气候与土壤条件场景的氮磷钾（NPK）肥料施用量推荐方案。本数据集包含以下变量： 1. 种植密度（Density）：指咖啡种植园的植株种植密度，即每公顷的植株总数。 2. 遮阴覆盖率（Shadow coverage）：表示咖啡种植园的单位面积遮阴程度，取值范围为0至1。 3. 季节（Season）：指代计划实施施肥的年份所属的气候季节，其中'Seca'代表旱季，'Lluviosa'代表雨季，'Normal'代表平季。 4. 土壤湿度（Humidity）：表示土壤含水率，取值范围为0至1。 5. 土壤氮素水平（N）：以mg/Kg为单位的土壤氮含量。 6. 土壤磷素水平（P）：以mg/Kg为单位的土壤磷含量。 7. 土壤钾素水平（K）：以mg/Kg为单位的土壤钾含量。 8. 土壤pH值（pH）：表征土壤酸碱特性的pH水平。 9. 氮肥推荐施用量等级（Cond_N）：需推荐施用的氮肥施用量等级。 10. 磷肥推荐施用量等级（Cond_P）：需推荐施用的磷肥施用量等级。 11. 钾肥推荐施用量等级（Cond_K）：需推荐施用的钾肥施用量等级。 注：肥料施用量等级划分标准如下：1为低用量等级，2为常规用量等级，3为高用量等级，4为极高用量等级。肥料施用量等级取决于种植密度，相关说明详见对应研究论文。Plus_A与Plus_B为额外推荐方案，涉及灌溉及土壤与作物养护相关内容。