| 【Objective】Balaced supply of mineral elements is of primary importance for the fruit yield and fruit quality of mango. The present research is to assess the uptake dynamics of macro- and micro-elements in mango at different fruit development stages and determine the proper fertilizer application time and application amount in order to provide a theoretical basis for the scientific and precise fertilization of mango.【Method】15-year-old‘Tainong 1’trees at full fruit stage in the dominant planting area of Renhe District, Panzhihua City were selected as the experiment materials. The changes in contents and accumulation of nitrogen （N）, phosphorus （P）, potassium （K）, calcium （Ca）, magnesium （Mg）, copper （Cu）, zinc （Zn）, iron （Fe） and manganese （Mn） in whole fruit of ‘Tainong 1’ mango were measured during the fruit maturing process.【Result】Results showed that the contents of N, K, Mg, Cu, Zn, Fe and Mn declined by 59.55%, 38.72%, 39.75%, 73.85%, 82.49% ,77.71% and 49.50%, respectively, from 7 to 77 days after full bloom （DAFB）, and the content of each element remained relatively stable or declined slightly. From 7 to 35 DAFB, the content of Ca increased by 56.85%, and then decreased progressively. P content remained relatively stable during the whole fruit developmental stage. The accumulation quantity of all nutrient elements increased gradually from young fruit stage to harvest period. The uptake amounts of all elements except for Mn were the greatest during the fruit quick expansion stage （35-77 DAFB）, accounting for 64.38%-74.94% of total uptake amount. The ratio of N/Ca, K/Ca and Mg/Ca showed a decreasing trend during the whole fruit developmental stage, while the K/P ratio increased from 7 to 77 DAFB and then decreased.【Conclusion】Quick expansion stage is a crucial period of nutrient uptake and fertilizer supplement for mango fruits. |
