城市草坪土壤肥力综合评价

Comprehensive evaluation of soil fertility quality on urban turf

本文以河北科技师范学院昌黎校区草坪土壤为例,测定分析了土壤容重、pH值、阳离子交换量(CEC)、全盐含量、有机质、碱解氮、速效磷、速效钾等理化性质,并对土壤各肥力因子进行了数值化处理。通过隶属度函数和偏相关分析,确定了各肥力因子的隶属度值及其权重,并利用模糊数学评价方法对土壤肥力进行了综合评价。研究结果显示,河北科技师范学院昌黎校区草坪土壤综合肥力水平低,与草坪质量状况相吻合,表明该评价方法具有可行性,有助于科学、合理、准确地评价城市草坪土壤肥力状况,提高土壤肥力,改善草坪质量。

Soil sample with the terf soil in Changli campus of Hebei Normal University of Science Technology was collected,and some physicochemical properties such as soil bulk density,pH,CEC,total salt content,organic matter,hydrolysable nitrogen,available phosphorus,available potassium were studied,and each soil fertility factor was made a numerical treatment in this paper.Through the way of membership function and the partial correlation analysis,the membership value and its weight of each fertility factor were determined,and the paper comprehensively evaluated soil fertility quality by fuzzy mathematics assessment.The result showed that the turf soil comprehensive fertility was low,which was consistent with the turf quality.This indicated that this assessment method was feasible,and it was helpful to appraise the urban turf soil fertility condition scientifically,reasonably and accurately.Besides,it could enhance the soil fertility conditions and improve the turf quality.