本文把土壤——作物——大气视为一个连续体,应用农田水分平衡方程及人工控制下的大田盆栽试验,分别对贵州省玉米和水稻的总耗水量以及耗水量随时间的变化规律进行了研究。指出省内各地应根据当地干旱气候规律,采取作物合理布局,优化灌溉的必要性。 In this paper, the soil-crop-atmosphere was regarded as a continuous body. The field water balance equation and artificial-controlled field pot experiment were used to study the changes of total water consumption and water consumption of maize and rice in Guizhou Province over time the study. Pointed out that all parts of the province should be based on the local arid climate rules, the rational layout of crops, the need to optimize irrigation.