Agricultural traffic is the main mechanism responsible for the increase in compacted fields. Strategies to minimize the impact of field traffic on the soil includes knowledge of stress-strain relationships, which involve the use of soil compaction models; however, one of the challenges for dissemination of these models among researchers and academics is its availability as computational tools, easily and freely accessible. In this work, we present a computational tool for simulation of compaction induced by agricultural field traffic based on soil physical and soil mechanics principles, which includes the calculation of contact stress, stress propagation in the soil profile, simulation of bulk density variation in response to the applied stress and assessment of the risk of compaction through readily available soil properties and machinery parameters. Furthermore, the soil inputs of the model is facilitated by a set of pedo-transfer functions for estimation of the required soil properties. The model was computationally implemented as a set of R functions (R software), as well as on an interactive web page, named PredComp, both available in the R package soilphysics (available from https://arsilva87.github.io/soilphysics/ or http://cran.r-project.org/web/packages/soilphysics/index.html).

农业运输是致密土地增加的主要机制。尽量减少田间交通对土壤的影响的策略包括：应力-应变关系的知识，其中包括使用土壤压实模型的知识；然而，在研究人员和学者中传播这些模型的挑战之一是其作为计算工具的可用性，可轻松，免费使用。在这项工作中，我们基于土壤物理和土壤力学原理，提供了一种用于模拟农田交通压实的计算工具，其中包括接触应力的计算，应力在土壤剖面中的传播，响应所施加的应力模拟堆密度变化，并通过易于获得的土壤特性和机械参数评估压实风险。此外，模型的土壤输入由一组用于估计所需土壤特性的pedo-传递函数来促进。该模型通过一组R函数（R软件）以及一个名为PredComp的交互式网页在计算上实现，两者都可以在R包中获得土壤物理学（可从https://arsilva87.github.io/soilphysics/或http://cran.r-project.org/web/packages/soilphysics/index.html获得）。