【摘要】 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。更多还原

【Abstract】 For more efficiently applying fertilization and management of precision agriculture,the decision trees arithmetic was used to establish model for management partition of soil nutrients,based upon the test data from Dehui in Jilin Province.Four evaluation indices,organic material,nitrogen,phosphorus and K were analysed.Six partitions were determined.Soil nutrient content was similar within partitions.The management partition of soil nutrients based on decision trees arithmetic could be used to guide variable fertilization in precision agriculture,and provided an effective classification method for management partition of soil nutrients.更多还原