基于小尺度不同地点所采集的土壤样本,通过不同统计方法研究土壤特性因子对地乐酚吸附容量系数的影响.利用逐步回归法,剔除直接影响较小的因子,再结合通径分析法研究出对吸附容量系数有直接影响的土壤特性因子,最后据此建立吸附参数和土壤特性因子的回归方程.土壤有机碳和粘粒含量被辨别为影响地乐酚吸附容量系数的2个直接主导因子,考虑土壤有机碳和粘粒含量这2个直接主导因子空间差异影响下的回归方程对地乐酚吸附容量系数空间差异的解释程度可高达92％.%The soil samples were collected from different places to study the influences of soil characteristic factors on dinoseb adsorption capacity coefficient by using different statistical methods. With the help of stepwise regression analysis,the soil characteristic factors which have little influence on the adsorption parameter were excluded,and then, the factors that have direct influences on dinoseb adsorption capacity coefficient were analyzed through path analysis. Finally,the best regression equation of adsorption parameters with soil characteristic factors was fitted. Organic carbon and clay were considered as the most significant soil factors which affect the dinoseb adsorption process. 92% of the variation of dinoseb sorption coefficient could be attributed to the variation of the soil organic carbon content and clay.
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