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为了便于精细施肥的实际操作和管理。以吉林省德惠市的图斑数据中的有机质、全氮、速效磷和速效钾含量为对象,采用决策树ID3算法进行农田土壤养分管理分区的研究。结果表明:得到的分区数目为6个,分区内土壤养分含量相近或差异较小,分区间差异显著。说明基于ID3算法的土壤养分管理分区方法可用于指导精细农业中的变量施肥,为土壤养分管理区提供了一种有效的划分方法。
In order to facilitate the practical operation and management of fine fertilization. Taking the organic matter, total nitrogen, available phosphorus and available potassium content in the spot data of Dehui City of Jilin Province as an example, the decision tree ID3 algorithm was used to study the division of farmland soil nutrients. The results showed that the number of subareas was 6, and the contents of soil nutrients in the subareas were similar or small, with significant differences among the subareas. It shows that the method of soil nutrient management based on ID3 algorithm can be used to guide the variable fertilization in fine agriculture and provide an effective method for soil nutrient management.