Abstract: 【Objective】Research the effect of the regulation of calcium succinate on the formation of sugar beet yield and quality.【Methods】 The sugar beet variety KWS7748 was taken as the experimental material，a randomized block design was adopted，and five treatments of calcium citrate application were set up: 180 mL/hm² （T₁），360 mL/hm² （T₂），540 mL/hm² （T₃），720 mL/hm² （T₄）and 0 mL/hm² （CK）. After that，the effects of calcium citrate on the morphology，photosynthetic substance production，and yield quality traits of sweet vegetable plants were studied.【Results】The leaf stalk thickness，root length，root diameter，root circumference，green head length，SPAD value，leaf area，aboveground biomass accumulation，underground biomass accumulation，sugar content，yield，and sugar yield of sugar beet showed a trend of first increasing and then decreasing with the increase of calcium citrate application rate. On the contrary，the plant height and dead leaf rate of sugar beet showed a trend of first decreasing and then increasing with the increase of calcium citrate application rate.Among them，T₃ treatment could reduce sugar beet plant height by 5.07% ~ 6.03%， dead leaf rate by 14.58%，and root shoot ratio by 6.01%~9.73% compared to CK treatment. It could also increase plant leaf area by 13.77% ~ 28.10%，relative chlorophyll content（SPAD value）by 8.83% ~ 14.85%， and increase aboveground biomass and underground biomass accumulation by 35.06%~35.27% and 15.33%~ 21.88% ，respectively，thereby increasing yield and sugar production by 9.77% ~ 20.42% and 15.72% ~ 27.61%，respectively. 15 traits related to sugar beet plant morphology，photosynthetic material production， and yield quality were synthesized into three independent evaluation factors. Then the scores for each treatment were calculated based on the principal component models F=0.721F₁+0.192F₂+0.082F₃.【Conclusion】 Spraying 540 mL/hm² of Prohexadione-calcium during the sugar accumulation period of sugar beet in Kashgar，southern Xinjiang can effectively promote the formation of sugar beet yield and quality.

Key words: sugar beet; Prohexadione-calcium; yield and quality; regulation

摘要： 【目的】研究调环酸钙对甜菜产质量形成的调控影响。【方法】以甜菜品种 KWS7748 作为材料，采用随机区组试验设计，设置5个调环酸钙施用量处理：180 mL/hm² （T₁）、360 mL/hm² （T₂）、540 mL/hm² （T₃）、720 mL/hm² （T₄）和 0 mL/hm² （CK），研究调环酸钙对甜菜植株形态、光合物质生产和产质量性状的影响。【结果】甜菜叶柄粗、根体长、根体直径、根围、青头长、SPAD值、叶面积、地上部生物量积累量、地下部生物量积累量、含糖率、产量及产糖量等指标随调环酸钙施用量的增加呈先增后降的趋势，甜菜株高和枯叶率反而随调环酸钙施用量的增加呈先降后增趋势。其中，T₃与 CK 相比可分别降低甜菜株高、枯叶率、根冠比 5.07%~6.03%、14.58%、6.01%~9.73%，可增加植株叶片面积13.77%~28.10%、相对叶绿素含量（SPAD值）8.83%~14.85%，可使地上部生物量和和地下部生物量积累分别提高35.06%~35.27%和15.33%~21.88%，从而使产量和产糖量分别提高9.77%~20.42%和15.72%~27.61%。将甜菜植株形态性状、光合物质生产及产质量相关的15个性状综合为3个独立评价因子，根据各主成分模型F = 0.721F₁ + 0.192F₂ + 0.082F₃，计算各处理得分评价。【结论】甜菜糖分积累期喷施调环酸钙施用量为 540 mL/hm²时可有效促进甜菜产质量的形成。

关键词: 甜菜, 调环酸钙, 产质量, 调控