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以秦皇岛市草坪土壤为例,对土壤的理化性质进行了室内分析,并根据各肥力因子的植物效应建立了相应的隶属度函数,计算出各评价指标的隶属度值;利用主成分分析法,确定各评价指标的权重,通过模糊数学法对土壤肥力进行了综合评价。结果表明,秦皇岛市草坪土壤综合肥力水平较低,主要限制因子为容重、有机质、碱解氮、速效钾。评价结果与草坪草生长状况相一致,表明该评价方法能准确、客观地评价草坪土壤的肥力水平,具有一定的应用价值。针对评价结果得出的土壤肥力限制因子,提出了提高土壤肥力的管理措施,对秦皇岛市草坪土壤的维护和治理提供了重要的指导和参考依据。
Taking Qinhuangdao lawn soils as an example, the physical and chemical properties of the soil were analyzed indoors. According to the plant effect of each fertility factor, the corresponding membership functions were established and the membership values of each index were calculated. Using principal component analysis, Determine the weight of each evaluation index, and make a comprehensive evaluation of soil fertility through fuzzy mathematics method. The results showed that the comprehensive fertility of turf soils in Qinhuangdao City was low, and the main limiting factors were bulk density, organic matter, available nitrogen and available potassium. The evaluation results are consistent with the growth status of turfgrasses, indicating that the evaluation method can accurately and objectively evaluate the fertility level of turfgrass so that it has certain application value. According to the limiting factors of soil fertility obtained from the evaluation results, the management measures for improving soil fertility are put forward, which provide important guidance and references for the maintenance and management of lawn soils in Qinhuangdao.