滴灌技术的推广应用使得甜菜缺水补偿效应得到发挥，针对亏缺灌溉下滴灌甜菜节水调质机理不明确的问题，选取丰产和高糖两个基因型甜菜材料，通过小区控制试验和碳同位素管栽试验，结合现代植物细胞学、植物生理与同位素示踪技术，明确亏缺灌溉对滴灌甜菜块根形态结构、碳水化合物累积、根源信号以及糖代谢相关酶活性的影响，揭示土壤水分与甜菜块根结构及块根碳水化合物积累的耦合关系，阐明亏缺灌溉下甜菜块根糖代谢机理，提出水分亏缺补偿效应下块根糖分积累的起始与结束信号及其主控因子，为进一步提升滴灌甜菜品质提供基础理论和技术支持。

The application of drip irrigation technique makes sugar beet get compensation effect of water deficit. This project intends to use "water-saving and crop quality improvement effect of deficit irrigation" as its researching main line, to identify the regulation effects of soil moisture on root morphological and structure characters, carbohydrates accumulation, root sourced signal, sugar metabolism-relative enzyme and root quality of drip irrigated sugar beet by using field experiment and C isotope tracing. Two sugar beet genotypes were chosen in the experiment, and are typical beets grown in Xinjiang. The interactive coupling relationship between root structure and carbohydrates accumulation of sugar beet were explored in order to achieve sugar metabolism mechanism on condition of water deficit compensatory and then to provide initial and terminal signal of root sugar accumulation and their main control factors for taking effective regulating measures in quality improvement of drip irrigated sugar beet in arid area.