| Using selenium mineral powder fertilizer produced by Ziyang Zhongdida Selenium Technology Co., Ltd., this study investigates the effects of different selenium concentrations on cucumber yield and quality parameters, in order to provide a theoretical basis for the production of selenium-enriched cucumbers. The cucumber variety ‘Zhenlu 202’ was used as the experimental material. Selenium mineral powder fertilizer from Ziyang was selected, and cucumber plants were subjected to treatments with different selenium concentrations (1 mg/kg, 1.5 mg/kg, 3 mg/kg, 5 mg/kg, and 10 mg/kg; five concentrations in total). Measurements were taken once the fruits reached the edible maturity stage, including plant height, fruit length, diameter, soluble solids content, acidity, vitamin C content, and selenium content. The results showed that higher selenium concentrations led to increased selenium accumulation in cucumber fruits. The selenium content in the fruits was 0.5,1.8, 6.6, 8.8, and 21.3 times higher than the selenium-enriched standard (0.02 mg/kg), respectively. The selenium content in the control group was only 0.003 mg/kg, which did not meet the selenium-enriched vegetable standard. However, the yield and fruit traits of the control group were superior to those of the selenium-treated groups. Selenium application affected both the yield and quality parameters of cucumber. With increasing selenium concentrations, the selenium content of cucumber fruits increased, while plant height, individual fruit weight, soluble solids, organic acid content, and vitamin C content were negatively affected to varying degrees.The optimal selenium concentration that supports cucumber growth while meeting the selenium-enriched vegetable standard requires further investigation. |
