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本试验旨在针对１个早衰低产、行将淘汰的芒果老果园进行几种更新改造模式的探索性试验，以为景谷全县现存数万株芒果老果树的更新复壮作出示范和提供科学依据。自１９９１年采果后，对此１０ｈｍ２２０６４株的老果园分别采取轻度更新、隔行更新、强度更新与轻度修剪４种模式，并配合以其它农艺措施（定期防治病虫害、坡改台、增施肥料）加强管理。在原有大芒果树仅保留１１００株的情况下，１９９３年全园总产量达４４３６０ｋｇ，为改造前１年的１０倍和改造前３年平均年产量的２１．６５倍。几种改造模式在目前的增产效果为：轻度更新＞隔行更新＞轻度修剪＞强度更新。强度更新的嫁接株自嫁接后两年开始进入投产期。
The purpose of this experiment is to explore and test several renewal and transformation modes of mango orchards to be phased out with one premature decline and low yield and to provide a scientific basis for the renewal and rejuvenation of the existing tens of thousands of mango old fruit trees in Jinggu County. Since the adoption of the fruit in 1991, the old orchards of 10hm22064 were lightly updated, interlaced updated, intensity updated and mildly pruned, respectively. In combination with other agronomic measures (pest control, pest control, Fertilizer) to strengthen management. In the case of the original big mango tree retaining only 1100 plants, the total output of the whole garden in 1993 reached 44,360kg, which is 10 times of that in the first year before the transformation and 21.65 times of the average annual output in the three years before the transformation. Several modes of transformation in the current yield-increase results are: Mild Update> Interlace Update> Mild Trimming> Intensity Update. Graft strength of the updated grafts since the beginning of two years after the commencement of production.