The invention discloses a controllable starch-based biodegradable agricultural mulch film. The agricultural mulch film is composed of PBAT+PLA, or PBAT+PLA+MTPS, or PBAT+PLA+MTPS+bagasse cellulose, together with a chain extender and a release agent. Combined with subsurface drip irrigation technology and adjustable component ratios, the degradation cycle and efficiency of the biodegradable film can be regulated according to climatic conditions, crop growth rules and water-fertilizer demand characteristics. The service cycle can match the optimal mulching period of local crops, ensuring temperature preservation, soil moisture retention, weed suppression, pesticide reduction, stable yield and income increase during coverage. The film can degrade completely in the late growth stage or after harvesting, and is eventually decomposed into water and carbon dioxide by soil microorganisms without soil or ecological pollution. The addition of low-cost modified starch-based composite materials and bagasse cellulose greatly reduces production costs, delivering excellent comprehensive performance and broad market prospects.
Area Code: CN
Application Number: CN201810993983.1
