中文摘要：

采用不同水平盐分处理的桶栽实验，利用Mass—Hoffman耐盐函数对向日葵不同生育期的株高、叶面积、花盘直径进行了盐分敏感性和相关性分析，并对各生育指标和产量进行相关性分析，得到了向日葵各生育期最优的耐盐评价指标。结果表明：株高相对增长量最适合作为向日葵苗期和蕾期的耐盐评价指标，而花盘直径相对增长量在花期和成熟期比株高、叶面积的相对增长量更适合作为向日葵的耐盐评价指标。

英文摘要：

In order to screen an ideal salt tolerance appraisal index at different growth stages of sunflower, the potted experiments un- der different salt treatment are conducted. The threshold-slope model of Maas and Hoffman is used to analyze the sensibility and rel-ativity between total dissolved solids of soil and growth indices at different growth stages of sunflower. The results show that the rel- ative height is an ideal salt tolerance appraisal index for seedling and bud stage, while the relative flower disc is better for florescence and mature stage.