The article discusses factors affecting the efficiency of using plants to clean up contaminated soil. It looks at how the type of pollutants, soil conditions, and plant species all play a role in how well the process works. The researchers also talk about how adding certain substances can help improve the cleanup process. Overall, the study suggests that creating a good environment for plants, adjusting the cleanup process based on different factors, and using additives wisely can all make contaminated soil cleanup more effective.