The uptake of soil-applied pesticide by runoff was evaluated at the field scale (0.06–3.6 ha) by examining data from previous field studies and using two popular chemical-uptake models: a uniform mixing cell, in which runoff mixes uniformly to a set depth, and a non-uniform uptake model, where chemical uptake decreases exponentially with soil depth. Both uptake models were implemented through the field-scale Pesticide Root Zone Model (PRZM5), which includes an update for adjusting runoff uptake parameters. For the nonuniform model, we conceptualized runoff as a distribution of subsurface flow, which assisted in revealing that a large amount (81%) of runoff must bypass soil interaction to adequately simulate the field data, with the remaining runoff acting over about a 3-cm depth. Similarly, the mixing cell required a large amount (84%) of runoff bypass for proper simulation, with the remaining portion acting over a 0.75-cm depth.

通过检查先前田间研究的数据并使用两种流行的化学吸收模型，在田间规模（0.06-3.6公顷）下评估了径流对土壤施用农药的吸收：均匀混合池，其中径流均匀混合成一个集合深度和非均匀吸收模型，其中化学吸收随土壤深度呈指数下降。这两种吸收模型都是通过田间农药根系模型（PRZM5）实现的，该模型包括用于调整径流吸收参数的更新。对于非均匀模型，我们将径流概念化为地下流量的分布，这有助于揭示大量（81％）径流必须绕过土壤相互作用才能充分模拟田间数据，而其余径流的作用约为3-厘米深。相似地，