The technology of soil remediation combined with microorganism and plant
	       Oil bearing soil + microbial degradation + improved soil + plant growth + oil content reduction;
	       After the restoration, the oil content of the soil gradually decreased until it could not be detected;
	       Because of its low cost, high efficiency, no secondary pollution and easy operation, indigenous bacteria need to be selected and domesticated;
	       It is suitable for the degradation improvement of low oil-bearing soil and the soil improvement of pyrolysis residue, with a long repair cycle and a requirement for temperature and humidity