They are "photodegradable mulch, biodegradable mulch, photo-biodegradable mulch (controllable oxidation and biodegradable mulch), three characteristics of mulch.

The processing of photodegradable plastic film is difficult, and the degradation rate is slow; Biodegradable plastic film is difficult to be completely assimilated and absorbed by the soil, and there is a problem of white pollution. Photo-biodegradable mulch film combines the characteristics of the above two kinds of mulch, which is relatively simple in the production process, and the cost is lower than that of biodegradable mulch.