The maxiumum and minimum water demands of crops; And the planting area of crops

The water demand is calculated by P-M equation and is used in the optimization of agricultural water resources management o promise the essential water demand and not exceed the maximum water demand to achieve water saving. The planting areas are gathered form the crop layer and used to calculate the water demand of crops by calculating the water demand per unit of areas by planting areas.

需水量通过P-M方程计算得到，应用于农业水资源管理优化场景，以保障基本需水量且不超过最大需水限值，从而实现节水目标。种植面积由作物图层提取获得，通过单位面积需水量与种植总面积的乘积核算作物总需水量。