试验观察了11种降解地膜在土壤中的降解效果，结果表明，11种降解地膜在土壤中都有不同程度的降解，其中以青岛康文生物材料有限公司生产的康文3号降解地膜在土壤中的降解率最高，在180 d时的降解率为30.17%，其埋入土壤中的时间越长，降解率越高，因此认为，应用康文3号降解地膜可以有效的减少残膜在土壤中的积累，应大力推广。

The degradation effect of 11 kinds of degradable plastic film in soil is observed. The result shows that 11 kinds of degradable films have different degree of degradation in soil， Kangwen 3 biodegradable plastic film in soil is the highest， which the degradation produced by Qingdao Kang Biological Materials Co. Ltd. The degradation rate of 180 days is 30.17%， the longer buried in the soil， the degradation rate is higher. We all think the application of Kangwen 3 biodegradable plastic film can effectively reduce the accumulation of residual plastic film in soil， and it would be widely popularized and used in the near further.

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