▎ 摘　　要

NOVELTY - An environment-friendly high-toughness agricultural mulching film comprises 65-78 pts. wt. polylactic acid, 22-30 pts. wt. poly butadiene polybutylene terephthalate, 0.1-0.3 pt. wt. chitosan, 0.2-0.5 pt. wt. modified graphene oxide, 0.3-0.7 pt. wt. nano zinc oxide, 0.2-0.5 pt. wt. sorbitan monostearate, 4-10 pts. wt. tributyl citrate, 0.2-0.7 pt. wt. UV stabilizer, and 0.5-1.2 pts. wt. antioxidant. USE - Environment-friendly high-toughness agricultural mulching film. ADVANTAGE - The mulching film has good stretch-proof performance, mechanical toughness, and aging resistance, and good antibacterial property, does not generate toxic substance, and is biodegradable, green, and environment-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the mulching film comprising weighing raw materials; dissolving chitosan, modified graphene oxide, nano-zinc oxide, and sorbitan monostearate, grinding at 600-800 revolutions/minute (rpm) for 4-6 hours, and drying at 60 degrees C; mixing remaining raw materials at 50-60 degrees C for 8-15 minutes and drying at 80 degrees C for 4 hours; mixing mixed components at 40-50 degrees C, stirring at 1200-1500 rpm for 15-20 minutes, extruding, water-cooling, and drying at 110-120 degrees C; and blow-molding, standing for 24 hours at room temperature, cutting, and packing.