在通过对完全生物降解地膜在玉米田间降解情况以及对地温、土壤含水量和玉米生育期、农艺性状、经济性状、产量的影响的研究，表明完全生物降解地膜既可达到普通地膜的促温、保墒、增产效果，又能减少田间残膜污染，具备大田推广的可行性。

The degradation of completely biodegradable mulch in corn field and effect of the temperature， soil moisture， corn growing period， agronomic traits， economic traits and the yield are studied. The result shows that completely biodegradable plastic film can reach promoting temperature， soil moisture， increasing production effect of ordinary film， and can reduce plastic film pollution field， with the feasibility of field promotion.

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