正确地确定农作物田間耗水量,对于灌溉工程的規划、农作物的田間管理、以及对我国的水利资源的开发和綜合利用有重大意义。例如,灌溉工程的取水、引水、分水建筑物及渠道系統的尺寸和規模等均与农作物田间耗水量有密切關系。农作物田間耗水量是指作物在田间所消耗的水分,或为獲得作物丰收在田間需耍供給的 Correctly determining the water consumption of crops in the field is of great significance to the planning of irrigation projects, field management of crops and the development and comprehensive utilization of water resources in our country. For example, the size and scale of water intake, diversion, diversion structures and canal systems in irrigation projects are all closely related to the field water consumption of crops. Crop water consumption in the field refers to the amount of water the crop consumes in the field or to be supplied in the field for harvesting of crops