Abstract:

In response to the current situation of soil pollution caused by plastic film mulching residue, different specifications and types of biodegradable mulch films were continuously introduced to study its degradation properties and its impact on crop growth and yield of overwintering Chinese cabbage. The results showed that the effects of several black biodegradable mulch films used in the experiment on the growth and yield of Chinese cabbage were not significant. Different degrees of degradation occurred during the planting process of Chinese cabbage, and it did not affect the subsequent large-scale mechanical plowing and subsequent rice planting. The residual degradation film flipped into the soil after two years of use was negligible. Among them, the black degradation film with 8 μm specification has the highest practical production and has been promoted and applied for four years, with good application results.

Key words: biodegradable mulch film, overwintering Chinese cabbage, degradation rate