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利用南京第二热电厂湿排的粉煤灰，进行了改良蔬菜土壤的试验，并对试验用的粉煤灰、不同施灰量的土壤及所产蔬菜共３８ 个样品的有害元素和放射性元素含量进行了系统的测定。结果表明：这些元素在土壤中的含量与粉煤灰施用量无明显相关性；在本次试验范围内施用粉煤灰没有造成土壤的污染；其所产蔬菜的这些元素含量也均低于国家卫生标准限值，食用是安全的。
Using the fly ash from the second thermal power plant in Nanjing, experiments were made to improve vegetable soil. The contents of harmful elements and radioactive elements in 38 samples of fly ash, soil with different amounts of ash and vegetables produced were tested. The system was measured. The results showed that there was no significant correlation between the content of these elements in the soil and the fly ash application rate. The application of fly ash did not cause soil pollution in the scope of this experiment. The content of these elements in the vegetables produced by them was also lower than the national Health standards limit, consumption is safe.