| 【Objective】Mango（Mangifera indica L.）enjoys the reputation of " King of Tropical Fruit " and is one of the most important tropical fruits in China. As a new and highly effective exogenous plant growth regulator, Thidiazuron（TDZ）is widely used in agricultural production. This paper aims to study the effects of thidiazuron 0.2% SL on the yield and fruit quality of mango.【Method】Five different concentrations of thidiazuron 0.2% SL were sprayed at the young fruit and fruit expansion stages of the mango to assess their effects on the production, quality and relevant indicators of mango. 【Result】Compared with the blank control, thidiazuron 0.2% SL could significantly increase the single plant yield of mango by 44.92%-55.60%, with the fruit quality increased by 43.63%-53.04%, the fruit transverse diameter increased by 7.52%-9.83%, the fruit longitudinal diameter increased by 27.53%-33.28%, the soluble content of mango pulp increased by 5.66%-8.12%, the content of vitamin C increased by 10.66%-14.04%, the sugar content increased by 6.71%-14.20%, while the titratable acid content decreased by 10.39%-18.42%.Compared with the control agent 0.003% propionyl brassinolide aqueous solution（CK）, the fruit yield, quality and fruit shape index under thidiazuron 0.2% SL treatment were significantly higher than those of the control agent, and there was no significant difference in quality indicators, all of which far exceeded the standards of Ministry of Agriculture and Rural Affairs standard for superior fresh mango.【Conclusion】Thidiazuron 0.2% SL significantly improved the yield and quality of mango. At the dosage of 3.33 mg/kg, the indicators of mango reached a high level, and showed no significant difference to the maximum value, therefore, the recommended concentration of thidiazuron 0.2% SL for mango production was 2.50-3.33 mg/kg. |
