农作物的田间耗水量通常是指作物全生长期叶面蒸腾(包括植株体内吸水)与棵间地面蒸发的总和,是进行灌区工程设计和确定作物合理灌溉的主要依据。作物耗水量与产量的关系怎样?不仅是一个理论问题,而且是一个生产上急需澄清的实际问题。长期以来,中外学者一般认为:作物的田 The field water consumption of crops usually refers to the sum of foliage transpiration (including water absorption in plant body) and ground floor evaporation in the whole growth period of crops, which is the main basis for the design of irrigation districts and for the rational irrigation of crops. What is the relationship between crop water consumption and yield? It is not only a theoretical problem, but also a practical problem urgently needed to be clarified in production. For a long time, Chinese and foreign scholars generally think: crop fields