广州有草坪被喷液体由黄变绿遭质疑，城管局：系药剂可补充营养

Core Viewpoint - The article discusses a situation in Guangzhou where a lawn was treated with a specialized agent that changed its color from yellow to green, leading to public speculation about the use of "artificial grass" [1] Group 1 - The treatment applied to the lawn is a specialized agent for grass maintenance, which is compliant with regulations and has a verification report [1] - The agent serves a nutritional purpose and can be used in conjunction with insecticides, fungicides, and fertilizers, rather than being a dye [1]