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论文以位于陕西关中平原腹地的杨凌为研究区域,以28个田块为采样的基本单元,选用土壤化学指标,运用模糊层次分析法确定评价指标的权重,并用模糊集理论中的贴近度和隶属度概念来识别土壤肥力质量,探讨基于田块尺度的土壤肥力评价方法。结果表明,评价结果与研究区域耕地的实际情况基本吻合。采用基于层次决策分析权重的模糊评价方法进行田块尺度上的土壤质量评价具有可操作性和可行性。
The paper takes Yangling, located in the hinterland of the Guanzhong Plain in Shaanxi Province as the research area, takes 28 plots as the basic unit for sampling, selects the soil chemical indexes, and uses the fuzzy analytic hierarchy process to determine the weights of the evaluation indexes. Using the close degree and membership Degree concept to identify the quality of soil fertility, and to discuss the evaluation method of soil fertility based on field scale. The results show that the evaluation results are basically consistent with the actual situation of cultivated land in the study area. It is feasible and practicable to evaluate the soil quality on the field scale by the fuzzy evaluation method based on the level decision analysis weight.