The contrast relationship between the sum of local precipitation and water from other sources and AWC could be used as the basis of irrigation and dranage planning and guideline in water allocation for agricultural and industrial use.

• 以当地降雨量和区外来水量之和与农业用水量的对比关系，可以作为灌溉排水区划的依据，并用以指导工农业生产和水资源调配。