▎ 摘　　要

NOVELTY - A heat insulating greenhouse film comprises PVC film, ethylene vinyl acetate copolymer or light adjusting agricultural film as base film and graphene oxide-aluminum zirconium oxide/silica composite layer. USE - Heat insulating greenhouse film used for planting greenhouse crops (claimed). ADVANTAGE - The heat insulating greenhouse film improves the greenhouse heat insulation performance, provides a suitable temperature inside the greenhouse, thus improving the growth of the vegetables. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the greenhouse film, which involves mixing 70-90 wt.% graphene oxide suspension containing 0.2-1 wt.% graphene oxide, 10-30 wt.% silica aerogel powder and aluminum-zirconium oxide powder suspension containing 0.1-1 wt.% silica aerogel powder, 0.1-1 wt.% aluminum-zirconium oxide powder, 20-30 wt.% curing agent and 68-79.8 wt.% solvent to obtain a composite coating, uniformly coating the composite on a base film and drying. The graphene oxide is prepared by Hummers method. The solvent is hydrophilic solvent, preferably water. The curing agent is aminoethyl piperazine or aqueous isocyanate.