▎ 摘　　要

NOVELTY - The utility model claims an oxidation graphene flexible foliar humidity sensor, from bottom to top is sequentially a polyimide, a circular platinum electrode layer, an oxidation graphene layer and an E-type platinum electrode layer. The humidity sensor of the utility model has ultra-fast response time and recovery time, it does not need external power supply, it can completely joint the blade surface to accurately measure the humidity of the leaf surface.