Objective] The aim was to study effects of mixed chemicals on defoliation rate of Annona squamosa after harvesting.[Method] Defo-liant trichloroacetic acid (TCA)+kalium jodatum(KI) +ethephon (ETH) thidiazuron (TDZ) was designed by using an orthogonal experimen-tal with four factors and three levels for spraying after harvest and the effect of the defoliant on defoliation rate of Annona squamos cv.African pride were studied.[Result] The result showed that spraying with the defoliant (1.0 g/L TCA+3 g/L KI+12% ETH+5 g/L TDZ) in the first 7d after harvest pruning can basically remove the leaf of Annona squamosa with defoliation rate as 92.04%,which is conducive to the development of post harvest pruning work and promoting the germination of branches.[Conclusion] The medicament combination of 1.0 g/L TCA+3 g/L LKI+12%ETH+5 g/L TDZ has the best defoliation effect.%[目的]研究混合药剂对番荔枝采后脱叶率的影响。[方法]以“非洲骄傲”番荔枝为材料，采用4因素3水平的正交试验设计，研究采后喷施脱叶剂（三氯乙酸＋碘化钾＋乙烯利＋噻苯隆）对番荔枝脱叶率的影响。[结果]在采后修剪前7 d喷施混合药剂（1．0 g／L三氯乙酸＋3 g／L 碘化钾＋12％乙烯利＋5 g／L噻苯隆），可以基本去除番荔枝叶片，脱叶率达92．04％，不仅有利于采后修剪工作的开展，而且能促进枝芽的萌发。[结论]此次试验脱叶效果最好的药剂组合是1．0g／L三氯乙酸＋3g／L碘化钾＋12％乙烯利＋5g／L噻苯隆。
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