Method for promoting content of grape resveratrol

The invention provides a method for promoting content of resveratrol in grape leaves, grape stems and grape fruits, which comprises preparation and dilution of colloid aluminum inductive agent and dry powder, and the relative use method thereof in the induction of the grape materials. The method of the invention has the characteristics of high efficiency, stability, low residue and low toxicity in promotion of the resveratrol in induced grape fruit and the relative by-products (such as leaves and stems) in the grape production. The method of the invention does not need precise instrument or automatic equipment, can be applied in a large scale in town and township enterprises with rich grape resources, not only can increase the grape quality, but also can improve the comprehensive utilization of the grape planting wastes, and can lead the grape trees to generate a certain resistance to pathogenic bacteria, thus decreasing the loss caused by plant diseases.