▎ 摘　　要

NOVELTY - The sensor comprises a sensitive electrode material layer (402), graphene group A (401), and a reference electrode (5) containing graphene group B (501) and a metal silver material layer (502). The metal silver material layer is provided with graphene group B as lower layer. The sensitive electrode material layer is formed on the surface of metal silver material layer whose lower surface is provided with a micro-groove or a micro-pit. USE - Micro-textured graphene nano bionic pH sensor for measuring pH of soil and planting matrix. ADVANTAGE - The soil and planting matrix are adsorbed efficiently, so as to adsorb hydrogen ion, to implement in-built measurement of pH of soil and planting matrix equally in a heterogeneous system. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of micro-textured graphene nano bionic pH sensor. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic sectional view of the micro-textured graphene nano bionic pH sensor. Reference electrode (5) Graphene group A (401) Sensitive electrode material layer (402) Graphene group B (501) Metal silver material layer (502)