At present, plant–microbial remediation of soil petroleum pollution has been widely used, but the study of using models to predict remediation effect and find optimal remediation conditions is still very lacking. In this paper, on the basis of the numerical model of previous research, the effects of Suaeda salsa–microbial remediation technique on soil petroleum hydrocarbon pollution were simulated under different soil initial pollutant concentration, soil moisture content and tillage depth. The spatial and temporal degradation of petroleum hydrocarbons and the corresponding degradation rate were studied. The results showed that under different remediation conditions, the degradation rate of microbes, plant and plant–microbial of petroleum hydrocarbon is in the range of 12.70%–24.70%, 4.14%–54.58% and 29.32%–67.28% in 180 days, respectively. It was found that the degradation rate of petroleum hydrocarbons was significantly affected by soil initial pollutant concentration, soil moisture content and tillage depth. The optimal application conditions of S. salsa–microbial remediation technology were found for the remediation of soil petroleum hydrocarbon pollution.

目前，土壤微生物污染的植物-微生物修复方法已被广泛使用，但仍缺乏使用模型预测修复效果并找到最佳修复条件的研究。本文在先前研究的数值模型的基础上，对小翅藻的影响–模拟了在不同土壤初始污染物浓度，土壤含水量和耕作深度下土壤微生物对土壤石油烃污染的修复技术。研究了石油烃的时空降解及其相应的降解速率。结果表明，在不同的修复条件下，180天内微生物，植物和植物微生物对石油烃的降解率分别为12.70％–24.70％，4.14％–54.58％和29.32％–67.28％。 。研究发现，土壤碳氢化合物的降解速率受土壤初始污染物浓度，土壤含水量和耕作深度的影响很大。沙门氏菌的最佳应用条件–发现了微生物修复技术来修复土壤石油碳氢化合物污染。