the amount of plastic in between 104 to 105, between the molecule and the combination of very strong, under natural conditions in the decomposition speed is very slow. Such as polyethylene plastic film in soil, about 300 to 400 years to complete degradation. They will destroy soil retention in the soil air permeability, reduce soil water storage to
force, affect the absorption of water, nutrients of crops, hinder the seedlings root growth, make farmland soil degradation. Henan Zhengzhou first cotton bags factory done experiments, when fragments up to 6.9 kilograms per mu of plastic film, wheat production by about 9%, reached 25 kg, a drop of 26%. Heavy metal ion
Plastic Additives of toxic substances by diffusion, and will in the soil permeability, directly affect the quality of groundwater and plant growth.
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