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密植杏树采收后回缩更新的效果品种为２花槽杏，６年生，株行距１ｍ×２ｍ。为解决树冠过早郁闭、结果部位外移问题，于１９９０年５月份用２０００×１９￣（－６）（２０００ｐｐｍ）ＰＰ＿（３３３）１０ｍｌ涂干，６月份采果后进行回缩更新。回缩方法，在维持树高１．...
The results show that the close planting and regeneration of the dense apricot tree is 2-year-old apricot with 6 years old spacing of 1m × 2m. In order to solve the problem of premature canopy occlusion of the canopy and the relocation of the result site, it was coated with 2000 × 19 ~ (-6) (2000ppm) PP_ (333) 10ml in May 1990 and then retracted and updated in June. Retract method, maintaining tree height 1. ...