基于模糊综合评判方法的辽河流域土壤养分分级与特征

Nutrition Classification and Characteristics of Soils in Liaohe Drainage Area Based on Fuzzy Comprehensive Evaluation Method

选取土壤中有机质、N、P、K2O、B、Cu、TFe、Mn、Mo、Se、Zn等11种组分为评价指标,以"土壤养分元素丰缺分级标准"和"辽宁省土壤微量元素评价分级"为标准,按照元素指标在农业生产中的重要性,分别赋予不同的权重,使用模糊综合评判方法计算出辽河流域土壤营养状况分级。通过土壤营养状况分级,使土壤整体营养特征更加明晰,矛盾更加突出,为农业规划和因地施肥提供了基础的土壤地球化学资料。

According to 〈 Classification criteria for soil nutrient element quality 〉 and 〈 Classification criteria for soil trace element abundance assessment in Liaoning Province 〉 , selecting orgC, N, P, K2O, B, Cu, TFe, Mn, Mo, Se, Zn as evaluation indexes and giving each component different weighting based on their importance in crop growth, the classification of nutrition status of soils in Liaohe Drainage Area are implemented using fuzzy comprehensive evaluation method. The classification of soil nutrient status pro-vides the basic soil geochemical information for agriculture planning and reasonably applying fertilizer.