近年来 ,公路绿化的绿化率、绿化质量不断提高 ,带给人们绿化美化的空间。但同时易被忽视的是其带来的负面影响 ,为了保证公路的绿化美化效果 ,每年都要为防治病虫害施放大量的化学农药 ,绿化里程愈多 ,农药污染愈严重 ;绿化愈接近居民 ,农药污染对居民的直接影响就愈严重。因 In recent years, the greening rate of highway afforestation and the continuous improvement of greening quality have brought people green space for beautification. However, at the same time, the negative impacts brought by it are easily neglected. In order to ensure the beautification effect of roads, a large amount of chemical pesticides should be applied every year to prevent and control pests. The more the greening mileage is, the more pesticide pollution is. The closer the greening is to residents and pesticides The more serious the direct impact of pollution on residents. because