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Key Technical Points for Late-Stage Management of Mature Prickly Ash Orchards
I. Strengthen management during the flowering and fruiting stages. (1) Boron spraying at flowering: During the full-bloom stage of prickly ash, spray 1-2 times with a 0.3% borax solution, which can noticeably increase the fruit-setting rate. (2) Use of prickly ash reddening agent: Applying a reddening agent can promote coloring of prickly ash and increase yield. 7-10 days before harvesting prickly ash, spray the trees 1-2 times with a 200-fold dilution of the reddening agent, so that the ripening period of prickly ash becomes relatively more concentrated, picking efficiency increases by an average of more than 2 times, the peel is bright in color, the peel yield rate increases by 3.3%, and the yield per plant increases by 23%. (3) Timely