不同玉米种植土属养分的模糊聚类评价

The Fuzzy Clustering Method-based Evaluation on Nutrient of Different Corn Planting Soil Genus

为玉米种植土壤养分管理提供科学的理论依据,以山西省晋中市和顺县玉米种植土壤为研究对象,基于对其不同土属耕层土壤（0~20 cm）有机质、全氮、速效磷和速效钾含量的分析数据,利用模糊聚类法对其养分适宜性进行评价,明确不同玉米种植土属养分的限制性因素。结果表明,基于模糊聚类理论的不同玉米种植土属土壤养分评价方法获得了较好的评价结果,评价对象的最佳分类数为4,地理空间上土壤隶属关系相对明确,可用于实施平衡施肥推荐。

In order to provide theoretical basis for nutrient management of corn planting soil, taking the corn planting soil of Heshun county in Jinzhong of Shanxi as the research object,and based on the data analysis for content of organic matter,total nitrogen,rapidly available phosphorus and rapidly available potassium of different soil genus topsoil（0~20 cm）,the suitability of corn planting soil was evaluated by using the fuzzy clustering method to define the factors limiting the nutrient of different corn planting soil genus. The Results showed that the fuzzy clustering method-based evaluation on nutrient of different corn planting soil genus obtained a better outcome,the optimal class number of its evaluation object was 4,and the soil subordinate relations in geography space were relatively clear,which can be usable for the recommendation of balanced fertilizer application.