Study on the Residue of Plastic Film in Inner Mongolia Autonomous Region

The study investigated the amount of mulching plastic film residue in corni¢potato and vegetable fields in Inner Mongolia Autonomous Region. The result shows that there has been a very serious pollution, and the average amount of residue of mulching plastic film remained in the farmland of Inner Mongolia is 36.3kg/hm2. The average amount of residue of mulching plastic film remained in the corn field soils is 56.25 kg/hm2, the potato fields were38.7kg/hm2, the vegetable fields were 25.05kg/hm2. The results also showed that more than 73% residual film remains in the 0 ~ 10cm plow layer, and the amount of plastic film residue depends on duration of utilization of mulching plastic film, and the longer the duration of utilization, the more plastic film residue is left in the field.