【摘要】 为了探索一种适合内蒙古平原灌区耕地土壤养分肥力评价的方法,本文以土默川平原灌区为例,采用三种不同的方法对当地耕地土壤养分状况进行了评价,并对评价效果做了比较。结果表明,三种方法的评价结果存在一定差异;其中,基于因子分析法样本综合得分的聚类分析法效果最好,其评价结果耕地的肥力等级高低与样点土壤养分含量相一致,即肥力等级评价结果可以直观反映土壤养分的高低。该方法是一种基于大量土壤样本进行耕地肥力评价的方法,其理论依据充分,方法简单,评价结果准确,适用于内蒙古平原灌区耕地土壤肥力的评价。更多还原

【Abstract】 In order to explore a suitable method for the evaluation of soil nutrient fertility in the cultivated land of plain irrigation area in Inner Mongolia, the soil nutrient characteristics in the cultivated land of the Tumochuan plain were assessed based on the factor analysis by three methods, and the evaluation results were compared. The results showed that there were some differences in the evaluation results among the three methods. Among the three evaluation methods, the comprehensive scores of each sample by using the cluster analysis method was consistent with the actual results. The evaluation results of soil fertility level were consistent with the distribution of soil nutrient contents. Soil fertility level could directly reflect the level of soil nutrients. The cluster method showed the sufficient theoretical basis,simple analysis process and accurate evaluation result. Therefore, it was suitable for soil fertility evaluation in the cultivated land of the plain irrigation area in Inner Mongolia.更多还原