Abstract:

The mulching plastic film is hard to be degraded in the natural environment. More and more residue left in the soil brings about risks to farming and the ecology. This paper used flax and silk waste to prepare a non-woven fabric mulching film. The process parameters were optimized through orthogonal test and the performance was tested. The results showed that breaking strength of the film is 30 N, thickness is 0.1148 mm and moisture regain is 6.7% when mass ratio of flax and silk is 96:4, surface density is 35 g/m2 and concentration (mass fraction) of adhesives is 12%. This non-woven fabric film can be degraded completely in the natural environment, as shown by infrared analysis. Moreover, it has good thermal insulation and moisture conservation effects, and the nitrogen content of soil increases with degrading of the film.