Grass planting quantity of grass planting bricks in Shaanxi Province

Does the subject want to ask "how to calculate the grass planting amount of grass planting bricks according to the net area in the hole" According to the information of the project cost network, the calculation of grass planting amount of grass planting brick is based on the design graphic size of the net area and green projection area in the hole of grass planting brick, and the area occupied by grass planting brick needs to be deducted.