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连续3年在保护地高密（610株·667m(－2)）栽培条件下，对‘曙光’油桃两种整形方式和“采后去冠”（PostharvestCanopyRemoval，简写作PCR）修剪系统进行了研究。结果表明：（1）与传统的低干开心形相比，圆柱形整枝有利于形成较大面积的叶幕和较大体积的树冠，而且树冠疏松，冠内透光率高。2年生树产量2104．5kg·666．7m(-2)，比低于开心形高39．1％，3年生材产量达2318．0km·667m(－2)，比开心形高35．3％，且成熟期提早3～4d，外观及内在品质也较好。（2）PCR修剪后60～70d可再生新的树冠，然后，通过喷施PP333和控水、控氮、增磷等综合措施可形成大量饱满花芽。圆柱形整形结合PCR修剪可有效地控势、控冠，促进保护地密植栽培早产、稳产。
Three shaping methods of “Shuguang” nectarines and “PostharvestCanopyRemoval” (abbreviation PCR) trimming system were studied under high-density (610 plants · 667m -2) cultivation for three years in succession. . The results showed as follows: (1) Compared with the traditional low-dry-heart-shape, cylindrical pruning was beneficial to the formation of large-area leaf curtains and large-volume canopy, and the crown was loose and the crown had high light transmittance. The annual yield of 2-year-old tree was 2104.5kg · 666.7m (-2), 39.1% lower than that of happy heart shape, 2318.0km · 667m (-2) of 3-year-old tree, 35.3% , And early maturity of 3 ~ 4d, appearance and internal quality is better. (2) New crown was regenerated 60 ~ 70 days after PCR pruning. Then, a large number of full flower buds could be formed by spraying PP333 and controlling water, nitrogen and phosphorus. Cylindrical plastic surgery combined with PCR trimming can effectively control the crown, and promote the protection of dense planting cultivation of premature delivery, stable production.