Propiconazole (PPC) and difenoconazole (DFC) are often combined for field applications. The resulted co-exsistence of PPC and DFC may have an effect on the fate of their individuals in soil. In this study, adsorption, desorption and leaching of PPC and DFC alone and their combinations were investigated in five different soils. Adsorption of PPC and DFC was significantly different on each soil with the Freundlich adsorption coefficients of 2.86–28.69 and 14.86–98.93 negatively correlated with soil pH, respectively. In addition, adsorption of PPC and DFC was declined by 27.12–37.59% and 17.28–25.35% with the presence of coexisting DFC and PPC, respectively. Mobility of PPC and DFC in tested soils was enlarged in coexisting system. The results indicate that adsorption, desorption and mobility of PPC and DFC were mainly affected by soil pH, and these behaviors of individual PPC and DFC were obviously altered by their co-existence.

丙吡唑（PPC）和二苯并康唑（DFC）通常结合起来用于现场应用。PPC和DFC共同存在可能会影响其个体在土壤中的命运。在这项研究中，仅在五种不同的土壤中研究了PPC和DFC及其组合的吸附，解吸和浸出。在每种土壤上，PPC和DFC的吸附均存在显着差异，Freundlich吸附系数分别为2.86–28.69和14.86–98.93与土壤pH呈负相关。此外，在同时存在DFC和PPC的情况下，PPC和DFC的吸附量分别下降了27.12-37.59％和17.28-25.35％。在共存体系中，PPC和DFC在被测土壤中的迁移率增加了。结果表明，PPC和DFC的吸附，解吸和迁移主要受土壤pH的影响，